Dependent clause, comma. Introductory clause, nonrestrictive/parenthetical element. Independent Clause. Clause

A. A clause that expresses a complete thought and can stand alone as a sentence

B. A dependent clause at the beginning of the sentence before the independent clause

C. A group of words that adds more information about a noun and can be removed without changing the meaning of the sentence

D. A clause that does not express a complete thought and can not stand along as a sentence

E. A group of words that contains a subject and a verb

F. a punctuation mark that sets off certain clauses and nonrestrictive/parenthetical elements

A. Independent Clause

B. Introductory clause

C. Nonrestrictive/parenthetical element

D. Dependent clause

E. Clause

F. Comma

The correct answer is:

A. A clause that expresses a complete thought and can stand alone as a sentence.