America . . . . . . the powerful president. A. have B. has C. is D. does

The correct answer is: has.

The sentence is in the present tense, and the subject is “America”. The verb “has” is the correct verb to use with a singular subject in the present tense. The other options are incorrect because they are not the correct verb tense or they do not agree with the subject of the sentence.

• Have is the plural form of the verb “has”. It is used with plural subjects.
• Is is the present tense form of the verb “to be”. It is used with singular subjects.
• Does is the present tense form of the verb “to do”. It is used with singular subjects.

The sentence “America has the powerful president” means that America has a powerful president. The president is a singular noun, so the verb “has” is the correct verb to use.