13. the tool that you use to tighten or loosen a nut on your robot is\na. screw - bolt\nb. nut\nc. rivet\nd…

13. the tool that you use to tighten or loosen a nut on your robot is\na. screw - bolt\nb. nut\nc. rivet\nd. allen key\ne. wrench

13. the tool that you use to tighten or loosen a nut on your robot is\na. screw - bolt\nb. nut\nc. rivet\nd. allen key\ne. wrench

Answer

Brief Explanations:

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