Fragments

English

What is the subject of this sentence: "Even though he had lots of friends, Jacob wished he had a best friend."

Which of these does NOT cause a sentence to be called a fragment if the sentence does not include it.

Which of the statements is true about the following phrase? "Despite knowing he was sick."

Which of the statements is true about the following phrase? "Every morning, John and Cara argued."

Which of the statements is true about the following phrase? "The play at nine o'clock."

Although it was funny, it was not right to laugh at James falling over.

He jumped really high although it was funny.

The phrase "Although it was funny." is a fragment. Which of the options below make it a correct sentence?