HoneyLemon
While the arms of the Tyrannosaurus rex seem puny and useless, there is reason to believe
the Tyrannosaurus, using these and, thus, grasping prey.
(A) the Tyrannosaurus, using these and, thus, grasping prey
(B) the Tyrannosaurus to have used them to grasp prey
(C) that the Tyrannosaurus could have used those and grasped prey
(D) in the Tyrannosaurus that would have used those to grasp prey
(E) in the Tyrannosaurus using them and grasping prey
OE
The original version has multiple issues, among them that the demonstrative pronoun “these” is used in a situation in which the use of a personal pronoun would make more sense, as the sentence is not set up to point out any particular set of arms.
The correct version uses a personal pronoun, rather than a demonstrative pronoun, and concisely conveys a clear meaning.
While the arms of the Tyrannosaurus rex seem puny and useless, there is reason to believe the Tyrannosaurus, using these and, thus, grasping prey.
(A) the Tyrannosaurus, using these and, thus, grasping prey
In this version the demonstrative pronoun “these” is used inappropriately, as the sentence is not set up to point out any particular set of arms.
Also, this version uses “to believe” in a way that does not make sense, seeming to convey that there is reason to believe something that the Tyrannosaurus has claimed, rather than that there is reason to believe something about the Tyrannosaurus.
(B) the Tyrannosaurus to have used them to grasp prey
This version appropriately uses the personal pronoun “them” to refer to the arms of the Tyrannosaurus and clearly conveys that there is reason to believe the Tyrannosaurus to have used its arms in a certain way.
Note that the idiom “believe X to Y” in used in this choice for the purpose of making this correct answer “sound funny” and, thus, seem to be incorrect.
Correct Answer
(C) that the Tyrannosaurus could have used those and grasped prey
In this version, the demonstrative pronoun “those” is used inappropriately, as the sentence is not set up to point out any particular set of arms.
Also, in this version, the use of the arms and the grasping of prey are illogically separated. The point to be made is not that the Tyrannosaurus used its arms and grasped prey, but rather, that the Tyrannosaurus used its arms to grasp prey.
(D) in the Tyrannosaurus that would have used those to grasp prey
In this version the demonstrative pronoun “those” is used inappropriately, as the sentence is not set up to point out any particular set of arms.
Also, this version uses “to believe in” in a way that does not make sense. The point to be made is not that there is reason to believe in the Tyrannosaurus, but rather that there is reason to believe something about the Tyrannosaurus.
Incorrect Answer
(E) in the Tyrannosaurus using them and grasping prey
This version uses “to believe in” in a way that does not make sense. The point to be made is not that there is reason to believe in the Tyrannosaurus, but rather that there is reason to believe something about the Tyrannosaurus.
Overall, this version conveys a nonsensical meaning, that there is a reason to believe in a certain Tyrannosaurus that is using its arms and grasping prey.
Correct answer: B