An author appeals to logic by

using emotionally charged language
providing evidence to back claims
relying on a reader's sense of justice
keeping his writing organized

The right answer is "providing evidence to back claims "

Thus, the complete sentence is:  "An author appeals to logic by providing evidence to back claims "

To make an appeal to logic, the author has to convince the reader that the position on a subject being exposed is reasonable. For this, it is necessary to justify, to gather facts or examples that have credibility, that is, to present a series of evidences that support the arguments elaborated.

a simile is first defined as a type of speech that uses one thing or phrase with comparisons to things of an unrelated kind, often in order to make a more vivacious description. so of the phrases above, only the last one (i swear she cast a shadow white as stone) would be considered a simile, as a shadow white as stone takes two unrelated things and uses them in an interesting way.

explanation:

mark brainliest and have a great day!

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