Answer:
1. Although he was wealthy, he was still unhappy.
2.Because my coffee was too cold, I heated it in the microwave.
They can change the background or the set up of the play to change the mood
Answer: That ancient land was located in the Middle East, a hot and sunny part of the world.
This is the only option that is correct. The sentence combines both ideas ("the ancient land was located in the Middle East" and "the Middle East is a hot and sunny part of the world) while maintaining the flow of the passage. Moreover, the sentence is grammatically and structurally correct.
I think the answer is number 2
