Multi-select problem: How does the next paragraph end?

A man in a lab coat is talking as he also visits with patients. he

OPT:
[i] demonstrates how to use a glass counter using a tool, and how to use the bait.
[ii] shows the uses of a sharpening stone to sharpen knives.
[iii] demonstrates how to use an electric crochet hook.
[iv] shows step by step instructions on how to wash hands properly.
[iv]