Final answer:
The Caesar who signed the Declaration of Independence on behalf of Delaware and is on the state quarter is Caesar Rodney.
Step-by-step explanation:
The Caesar who signed the Declaration of Independence on behalf of Delaware and is depicted on the state quarter is Caesar Rodney.
Caesar Rodney was an American lawyer, politician, and Founding Father who served as a delegate to the Continental Congress. He played a crucial role in securing Delaware's support for independence and was one of the signers of the Declaration of Independence.
Therefore, the correct answer is d) Caesar Rodney.