Which sentence is a complex sentence? a)the lockers in my old school were small b) most of them were in the hallway c) i hated mine because it was outside the gym d) the gym is four floors away from my homeroom

The correct answer is C.

Explanation:

A Complex sentence is a sentence having both an independent clause and one dependent clause. As the name connotes, an independent clause is capable of standing on its own in a sentence. While a dependent clause as it contains both subject and verb cannot stand on its own.

Examples of complex sentences are; John was delighted he was part of the football match, Michael laughed when I joke, I cooked it myself etc.

To easily identify complex sentences, two clauses are closely connected with a subordinating conjunction.