Question

which is a compact tool that operates by moving attachments back and forth at very high speeds?
impact driver
compound miter
oscillating multi - tool
table saw

Explanation:

An oscillating multi - tool is a compact tool that moves its attachments back and forth at high speeds. An impact driver delivers rotational and impact force, a compound miter cuts angles, and a table saw has a large stationary blade.

Answer:

C. oscillating multi - tool