Perhaps say something like lazy or tired? Sleepy is considered a character trait, but it is not very formal.
In B, "walk" is not a preposition, It's a verb >>we reject the answer.
In C, "wither" is not a preposition. >>we reject the answer.
In D, "whale" is not a preposition, it's a noun. >>we reject the answer.
so A is the correct asnwer!
ps. it there are also other problems in the rejected answers, for example, "wonder" is a verb, but one false word is enough, so I just gave an example.
Answer:
<h3>
Entreat</h3>
<em><u>to ask somebody to do something, often in an emotional way</u></em><em><u>.</u></em>
<h3>
Hearkens</h3>
<em><u>listen</u></em>
<h3>
lament</h3>
<em><u>a song, poem or other expression of sadness for somebody who has died or for something that has ended</u></em>
<h3>
Defray</h3>
<em><u>provide money to pay (a cost or expense).</u></em>
<h3>
Myraid</h3>
<em><u>a very large number of something</u></em><em><u>.</u></em>
<h3 /><h3 />
Adventurous, bold, daring, fearless, heroic, valiant, etc.