William . . . . . . . . wide enough to fight Mr. Jacob. A. are B. am C. is D. had

The correct answer is: C. is

The sentence is in the simple present tense, so the verb must also be in the simple present tense. The verb “to be” is conjugated as follows in the simple present tense:

• I am
• You are
• He/She/It is
• We are
• You are
• They are

In this case, the subject of the sentence is “William,” which is a singular noun. Therefore, the correct verb form is “is.”

The other options are incorrect because they are not in the simple present tense. Option A, “are,” is the plural form of the verb “to be.” Option B, “am,” is the first person singular form of the verb “to be.” Option D, “had,” is the past tense form of the verb “to have.”

Here is a brief explanation of each option:

• Option A, “are,” is the plural form of the verb “to be.” This option is incorrect because the subject of the sentence is “William,” which is a singular noun.
• Option B, “am,” is the first person singular form of the verb “to be.” This option is incorrect because the subject of the sentence is “William,” which is a third person singular noun.
• Option D, “had,” is the past tense form of the verb “to have.” This option is incorrect because the sentence is in the simple present tense.

I hope this explanation is helpful!