What is the best evaluation of the sentence?

The sentence is incomplete because it lacks a complete

subject.

The sentence is incomplete because it lacks a complete

predicate.

The sentence is incomplete because it lacks a direct

object.

The sentence is incomplete because it lacks a indirect

object.

The sentence is incomplete because it lacks a complete predicate

Explanation:

I have just finished the test.

The best evaluation of the sentence is A: The sentence is incomplete because it lacks a complete subject.

Explanation:

A "complete sentence" is the one that has one "subject" and one "verb". The Subject would identify about whom the sentence is. The question one can ask to identify the subject in a sentence is 'who or 'what'. Verb will identify the subject's action. If even one of them is missing i. e., subject or verb, the sentence is said to be incomplete.

Also, one can understand if the sentence is complete or not by checking if the sentence is making complete sense of meaning or not.