C and B. A past tense refers to the past. Crawls is currently doing, was crawling could be either present or past, so if you have a multiple choice that would be one of them. C is crawled, meaning he was. And D is will crawl, meaning the future.
A.) Declarative sentence
Declarative sentences make a statement that end with a period.
Answer:
He had been the oldest man
Explanation:
