Differentiate the components of fact/opinion and theory/evidence.

Fact is something that is known or proved to be true and can be backed up with evidence. Opinion can not be proven true as it is based on an individual person's experiences and preferences. Everybody's opinion can be different, yet none are wrong.

A theory is an explanation of something based on observations. Evidence is facts or info that proves whether or not something is true. You can use evidence to back up a theory.

Explanation:

type of error:

the error in the sentence is a "dangling modifier". a dangling modifier is a phrase, word or clause that "dangles" because there is not target to modify. in this case, "after mopping the floor" is the dangling modifier since it has no word to modify. the noun "house" cannot mop the floor; therefore there is a mistake in the writing of the sentence.

the answer should be

the simple past tense of strive.

hope this !