<span>A.Tension
It is clear there is tension in this passage because of the way Grete handles Gregor's food. The fact that she is using a rag and not her bare hands shows that she is slightly uncomfortable in the situation and is not willing to touch something he might have touched directly. </span>
Well it all depends on what you're writing about. When you write your rough draft think about the feeling it gives when reading it over. Then if it feels right, give it a go. This might not help much but think about how you feel while reading it.
Amy uses imagery to show her feelings because her family is embarrassing her in front of someone she likes. She describes how they are doing it, as imagery.