<span>The most significant characteristic of Cassius is his ability to perceive the true motives of men. Caesar says of him, "He reads much; / He is a great observer and he looks / Quite through the deeds of men." The great irony surrounding Cassius throughout the play is that he nullifies his greatest asset when he allows Brutus to take effective control of the republican faction.</span>
This rocky canyon in the desert is not the deepest or the widest.
The adjective phrase is IN THE DESERT. It modifies the word CANYON. So, the answer is letter B.
An adjective phrase is a group of words that describe a noun or pronoun in a sentence. The adjective phrase can be placed before, or after, the noun or pronoun in the sentence.
In the above sentence, the adjective phrase is placed after the noun.
For this I would put the subject to English not math