The rhyme scheme is ABAB up until the last two lines, which are CC. Rhyme scheme signifies which lines rhyme with each other, depending on the last word in each line. The As correspond with each other, the Bs correspond with each other, and so on.
The main idea of the poem is that one should not to give up pursuing a woman if at first she doesn't seem interested, because when she has finally been won over, her love will last forever. In other words, be patient, because a woman who is not easily wooed will provide the longest form of love.
The poet uses the "metaphor" of burning an oak. A metaphor is a comparison between two seemingly unlike things (in this case a woman/her love and an oak tree) without using the words "like" or "as" (which would make the comparison a simile).
The poet uses the metaphor of a wound to represent how deep love can go ("Deep is the wound, that dints the parts entire With chaste affects, that naught but death can sever").
The answer that best describes the tone in those lines is b, lonely.
All of the programs are helpful in alleviating poverty because people don't have to pay for them. Nutrition programs give you food form the country just like housing and free healthcare are made to stop you from wasting your own money on it. All of the programs help people spend money on things that they need and are not for basic survival.
A foil is the near complete opposite of the main character (whichever character they want you to find a foil for).
Rainsford and Whitney were good hunting friends with numerous similar interests. They could not be foils because of how close in similarity they were. Even when they disagreed on how animals felt about being hunted, Whitney seemed open to and intrigued by Rainsford's points and way of thinking.
Ivan is a near irrelevant character, being a mere Cossack who follows whatever General Zaroff says. He is mindless and has almost zero traits to even compare to Rainsford, let alone any traits aside from a mindless follower to begin with.
The answer would be General Zaroff. This is almost like the cliche protagonist vs antagonist foil. Both of them are hunters, but different kinds. Zaroff got bored with animals and wanted to hunt human people instead, whereas Rainsford had enjoyed the thrill of an animal hunt and thinks that the hunting of people is murder. Zaroff is more heartless and cold, a killer, if you will. Rainsford seems to think highly of actual people, and had no interest in playing Zaroff's game.