In a story, the character who is the main character's adversary is called the: a. protagonist. b. antagonist. c. flat character. d. round character.

The main character's adversary would be B.) antagonist because an antagonist in a story is a person who actively opposes or is hostile to someone or something; an adversary.

There are mainly two areas of similarities between the two depictions.

Explanation:

Lord Alfred Tennyson inspired the painting The Lady of Shalott by John William Waterhouse with his poem about her legend in 1842. There are mainly two areas of similarities between the two depictions.

In the first place there is the physical description of The Lady of Shalot. Her clothes and demeanour are illustrated as if Tennyson were describing the painting.

He tells us about the white dress and the crown of peals she is wearing.

In the second place he captures the essence of the feelings conveyed by the painting as he tells us how distraught she feels:  

With a steady stony glance—

Like some bold seer in a trance,

Beholding all his own mischance,

Mute, with a glassy countenance—