Question

a moldboard is the blade of a ______.

○ scraper

○ motor grader

○ backhoe loader

○ dozer

Explanation:

A moldboard is the curved blade (moldboard) of a dozer (bulldozer), used for pushing and shaping soil, rock, etc. Scrapers, motor graders, and backhoe loaders have different blade/implement designs not referred to as moldboards.

Answer:

D. dozer