1. The Greek root -hor- means “time.” What kind of tool or device might someone use in the field of horometry? 2. The Greek root -opt- means “eye” or “sight.” Why might someone visit a person who practices optometry?

Hor; I'm not sure (watch)

Opt; you might visit an optometrist to for suggestions on ways to manage rural defects.

faulty parallelism is a construction in which two or more parts of a sentence are equivalent in meaning but not grammatically similar in form.

the correct version of this faulty parallelism in the sentence is:

the hikers knew that the hike was six miles, that it usually required the entire day, and it would not be wise to start after 10: 00 a.m.

the problem is the last sentence, the first two have a basic subject+verb+object structure.

so, to give a proper balance to the structure, or better said, to give a parallel structure, we must write a basic s+v+o structure in all three sentences:

the hikers knew that the hike was six miles, that it usually required the entire day, and it would not be wise to start after 10: 00 a.m.

if its apex this should be the correct answer

war information to be released publicly must first be deemed useless to the enemy