Which of the following statements is an accurate description of a coordinating conjunction?

a. it connects the subject to another word that identifies or describes the subject.
b. it connects the object of an action verb to a word, phrase, or clause in a sentence.
c. it connects words, phrases, or clauses of differing levels of importance in a sentence.
d. it connects words, phrases, or clauses that have equal importance in a sentence.

D. It connects words, phrases, or clauses that have equal importance in a sentence.

Explanation:

Coordinating conjunctions connects words, phrases, or clauses that have equal importance in a sentence.There are seven coordinating conjunctions:  for, and, nor, but, or, yet and so.

Example: This store on the corner of the street is full of groceries and drinks.

Coordinating conjunctions connects main clauses, words, or other parts of a sentence which are of the same syntactic importance.

Example: Jane, my neighbor loves to cook meals but hates to wash the dishes.

in june, we will have been married for eighteen months. (i am assuming this is what you want? the sentence, as you have presented it, is grammatically incorrect--   you want it corrected, yes? )