What is this group of words?

Miss Smith kept both of them after school because they hadn't done their homework.

a good sentence

comma splice

run-on

fragment

The answer is: A good sentence.

Explanation:

The above statement is made up of two independent clauses. This means that each of those clauses make complete sense.

Breaking them up will be: "Miss Smith kept both of them after school."

"They hadn't done their homework."

If a comma was in between them(comma splice), it would have been wrong because the statements can stand on their own.

To use two independent clauses together in a statement, a conjunction must be used as it is in the text above ( "because" was used). Using a conjunction, a sensible idea is communicated without losing meaning of any one and the statement as a whole is considered a good sentence.

appropriate

adjective: correct or right for a particular situation or occasion

verb 1: to take and use for a purpose

verb 2: appropriate also means to steal

inappropriate

unsuitable, esp. for the particular time, place, or situation: