Engineer: I've noticed that the builders are mixing 10% more than the

Engineer: I've noticed that the builders are mixing 10% more than the regular amount of chemical hardener into the A504 building material that they are using. This will lead to problems at a later stage in the project.

Project manager: The extra hardener causes the material to stabilize in a shorter amount of time. This method will allow us to reach the painting stage sooner, and thereby complete the project well before the deadline.

Which of the following, if true, most supports the engineer's claim?


A. Because a hardened form of A504 does not release toxic gases, it cannot be inhaled and is, therefore, not harmful.
This makes engineer's claim weaker. opposite

B. When a hardener is mixed into a building material, the mixed substance immediately begins to react, leaving a builder only a few minutes to work, before it loses all elasticity.
this makes project manager's claim weaker.

C. When preparing A504, the chemical hardener should make up no more than 10% of the final mixture.
This is the conclusion of Engineer

D. The chemical reaction caused by A504's contact with an excess amount of hardener is quicker, releasing higher levels of heat energy, and resulting in a much weaker final structure.
This makes sense. Engineer argument that A504 lead to problem at later stage. Here also it says that much weaker final structure.

E. Construction companies are given the last payment for a project on delivery of the completed building, and are heavily penalized for not meeting deadlines.
Not relevant with the Engineer's argument

IMO D

Engineer: I've noticed that the builders are mixing 10% more than the regular amount of chemical hardener into the A504 building material that they are using. This will lead to problems at a later stage in the project.

Project manager: The extra hardener causes the material to stabilize in a shorter amount of time. This method will allow us to reach the painting stage sooner, and thereby complete the project well before the deadline.

Which of the following, if true, most supports the engineer's claim?

A. Because a hardened form of A504 does not release toxic gases, it cannot be inhaled and is, therefore, not harmful. -> Not harmful is not bad for the project. Incorrect.

B. When a hardener is mixed into a building material, the mixed substance immediately begins to react, leaving a builder only a few minutes to work, before it loses all elasticity. ->Builder gets less time to work, It's okay, but how does engineer's claim as there will problem at later stage be justified. Incorrect.

C. When preparing A504, the chemical hardener should make up no more than 10% of the final mixture. -> Irrelevant.

D. The chemical reaction caused by A504's contact with an excess amount of hardener is quicker, releasing higher levels of heat energy, and resulting in a much weaker final structure. -> So, this is the impact at later stage.

E. Construction companies are given the last payment for a project on delivery of the completed building, and are heavily penalized for not meeting deadlines. -> Irrelevant.

So, I think D.

Engineer: I've noticed that the builders are mixing 10% more than the regular amount of chemical hardener into the A504 building material that they are using. This will lead to problems at a later stage in the project.

Project manager: The extra hardener causes the material to stabilize in a shorter amount of time. This method will allow us to reach the painting stage sooner, and thereby complete the project well before the deadline.

Which of the following, if true, most supports the engineer's claim?

We need to strengthen the argument that mixing 10% more than the regular amount of chemical hardener into the A504 building material will lead to problems at a later stage in the project.


A. Because a hardened form of A504 does not release toxic gases, it cannot be inhaled and is, therefore, not harmful. Incorrect.

B. When a hardener is mixed into a building material, the mixed substance immediately begins to react, leaving a builder only a few minutes to work, before it loses all elasticity. Incorrect.

C. When preparing A504, the chemical hardener should make up no more than 10% of the final mixture. Incorrect.

D. The chemical reaction caused by A504's contact with an excess amount of hardener is quicker, releasing higher levels of heat energy, and resulting in a much weaker final structure. Correct. Does best to strengthen engineer's claim.

E. Construction companies are given the last payment for a project on delivery of the completed building, and are heavily penalized for not meeting deadlines. Incorrect.

IMO D

A. Because a hardened form of A504 does not release toxic gases, it cannot be inhaled and is, therefore, not harmful.

Against Engineer's claim. Eliminate

B. When a hardener is mixed into a building material, the mixed substance immediately begins to react, leaving a builder only a few minutes to work, before it loses all elasticity.

Just a fact that project manager has stated. Eliminate

C. When preparing A504, the chemical hardener should make up no more than 10% of the final mixture.

Irrelevant. We don't know how this weakens anything. Eliminate

D. The chemical reaction caused by A504's contact with an excess amount of hardener is quicker, releasing higher levels of heat energy, and resulting in a much weaker final structure.

Result in a much weaker final structure is exactly what Engineer has been claiming and now we know how. Looks good

E. Construction companies are given the last payment for a project on delivery of the completed building, and are heavily penalized for not meeting deadlines.

We are not concerned with deadlines, atleast the engineer is not. It is project manager's concern. Eliminate

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