Explanation
Correct answer: A.
Choice A is the best answer because it most effectively illustrates the claim that Wheatley addresses her poem "On Virtue" to the quality of virtue, imploring it to assist her in reaching a future goal. In the quotation, Wheatley begs virtue to accompany her, or "attend [her]," through her youth and to "guide [her] steps to" the future goal of "endless life and bliss."
Why the other choices are wrong
Choice B
Choice B is incorrect because this quotation suggests the difficulty of fully comprehending virtue. Rather than asking virtue for help, Wheatley presents it as a quality that is impossible to entirely understand because it is so grand and deep.
Choice C
Choice C is incorrect because this quotation describes Wheatley’s effort to comprehend virtue despite virtue itself declaring that such wisdom is beyond her grasp, or "higher than a fool can reach."
Choice D
Choice D is incorrect because rather than asking virtue for help in this quotation, Wheatley urges herself to "sink not into despair" because virtue is always nearby.