How do you form the perfect tense of a verb?

A.Use the Helping verb will and the base form of the verb.
B.Use a form of the verb be and the last particle of the verb
C.Use a form of the verb have and the present participle of the verb.
D.Use a form of the verb have and the past participle of the verb

Present Perfect - Form. The present perfect of any verb is composed of two elements : the appropriate form of the auxiliary verb to have (present tense), plus the past participle of the main verb. ...

Present perfect, function. The Present Perfect is used to indicate a link between the present and the past.

There are three perfect tenses -- present, past, and future. Each is formed differently.

http://englishplus.com/grammar/00000361.htm

that didn't help not one bit

The correct answer is D. Use a form of the verb "have" and the past participle of the verb.

To form the perfect tense of a verb, you typically use a form of the verb "have" and the past participle of the main verb. The past participle is the verb form used in the third column of irregular verb tables or ends in -ed for regular verbs.

For example, let's use the verb "eat":

Present tense: I eat an apple.
Past tense: I ate an apple.
Perfect tense: I have eaten an apple.

In this example, "have" is the form of the verb "have" used in the present tense, and "eaten" is the past participle of the verb "eat."

So, to form the perfect tense of a verb, you need to identify the correct form of "have" (e.g., have, has, had) based on the subject and verb tense, and combine it with the past participle of the main verb.