Answer:
senator clarence hayward answered my letter and signed it personally.
Step-by-step explanation:
Senator = it's at the beginning of a sentence and when referring to a specific senator by name it needs to be capitalized. if ur talking about senators on a general aspect ,ex: the senators are eating, you wouldn't capitalize it then.
Clarence Hayward = this is a proper noun, it's that person name and we always capitalize our names.