Official Explanation
To save time and money on water and maintenance, many homeowners are opting for the use of synthetic potted plants, instead of real plants, for the decoration of the interiors of their homes. The synthetic plants being sold today are very realistic in their details and often quite beautiful. Since most homeowners welcome ways to reduce expenses, synthetic plants are increasing in popularity. Because of these benefits, homeowners should replace their live indoor plants with synthetic plants.
The answer to which of the following would be most useful in evaluating the argument?A. Are synthetic plants replicas of real live plant species, or are they original designs based on common plant forms?
Incorrect.
To solve this Investigation question, first break down the argument. The first three sentences provide facts and are hence premises. The last sentence is a recommendation (should) and is, therefore, the argument's conclusion:
Premise A: many people are using fake plants to decorate their homes so that they can save time and money
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Premise B: the fake plants available are realistic and often beautiful
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Premise C: the fake plants are becoming popular since most homeowners look for ways to cut costs
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Conclusion: because of the mentioned benefits, homeowners should use fake plants only
Vital factor: ?
You are required to find the factor which is most crucial to the author's conclusion. The correct answer is a question which could support or weaken the conclusion depeneding on its answer.
This answer choice is irrelevant. The fact that a fake plant's design could be imaginary does not really give us any reason to believe that homeowners should, or should not, replace their live plants with fake ones.B. Can the efficiency of the photosynthesis of a live indoor plant be affected by the behavior of humans in its surroundings?
Incorrect.
Answering this question would not give us ay direct strengthening or weakening evidence for the conclusion. Too many assumptions would have to be made to link data from this question to a negative aspect of live or fake plants.C. Do homeowners with live plants spend more than 5% of their overall home expenses on the maintenance of such plants?
Incorrect.
Since no figures are mentioned in the argument, answering this question would not be useful. We cannot just assume that 5% of the total expenses is a large or small amount to spend on maintaining plants.D. Are the organic gaseous exchanges of a live plant advantageous to its immediate surrounding environment?
Organic gaseous exchanges are something that a plastic plant does not do. If such exchanges are beneficial to a plant's surroundings i.e. a home, then the author's proposal to get rid of such plants is weakened. If such exchanges are insignificant, then the author's proposal is strengthened.E. What percentage of homeowners are interested in cutting down the costs associated with general home maintenance?
Incorrect.
To solve this Investigation question, first break down the argument. The first three sentences provide facts and are hence premises. The last sentence is a recommendation (should) and is, therefore, the argument's conclusion:
Premise A: many people are using fake plants to decorate their homes so that they can save time and money
+
Premise B: the fake plants available are realistic and often beautiful
+
Premise C: the fake plants are becoming popular since most homeowners look for ways to cut costs
=
Conclusion: because of the mentioned benefits, homeowners should use fake plants only
Vital factor: ?
You are required to find the factor which is most crucial to the author's conclusion. The correct answer is a question which could support or weaken the conclusion depending on its answer.
Asking this question would be unnecessary since we are already told in the last premise that most homeowners are interested in cutting down home maintenance expenses. This answer choice does not help us evaluate the recommendation in the conclusion.