In what way is Zaroff portrayed as Rainsford’s foil?

Zaroff is a strong hunter, and Rainsford is a weak one.
Zaroff is a person without a conscience, but Rainsford has one.
Zaroff is a considerate host, but Rainsford is an inconsiderate guest.

1. a poem that tells a story irony 2. taking on human characteristics narrative 3. a direct comparison between two things personification 4. words that are opposite the thoughts in a speaker's mind simile 5. implied comparison introduced with "as" and "like idiom 6. one's own manner of speaking metaphor

What do we call a two-syllable metrical foot that consists of one unaccented syllable followed by an accented syllable? a. anapest b.dactyl c.iamb d.elision

Which resource is most useful for finding the correct spelling of words?