Question

1. the tool that you use to tighten or loosen a nut on your robot is

a. screw - bolt
b. nut
c. rivet
d. allen key
e. wrench

Explanation:

A wrench is a tool used to tighten or loosen nuts. A screw - bolt is a fastener, a nut is the object being tightened/loosened, a rivet is a permanent fastener, and an allen key is for hexagonal - socketed screws.

Answer:

E. wrench