Which adjective means slow and clumsy because of great weight or size?

• A. Posterity
• B. Plus
• C. Ponderous
• D. Posthumous

Answer: (C)

The main idea here is choosing an adjective that captures the sense of slow, awkward movement caused by great weight or size. Ponderous fits best because it directly conveys heaviness that makes movement slow, and it can describe both physical gait and heavy, labored prose. A ponderous stride or a ponderous speech feels sluggish and cumbersome due to size or weight.

The other options don’t convey that specific sense: posterity refers to future generations; posthumous describes things that occur after death; plus means in addition or favorable, not related to heaviness or slowness. So ponderous is the correct choice.