Which word group is a complete sentence?

Question

Responses

And though he enjoyed playing the game a lot.
And though he enjoyed playing the game a lot.

Although Miranda had already read the book, she was happy to read it again.
Although Miranda had already read the book, she was happy to read it again.

When she went to the store a second time.
When she went to the store a second time.

After Chris finished the chemistry experiment.

Answer 1

The complete sentence from the provided options is:

Although Miranda had already read the book, she was happy to read it again.

This sentence contains a subject and a predicate, making it a complete thought. The other options are dependent clauses and do not express a complete thought.