The main theme is the fragility of sanity, guilt versus innocence, and the unrelenting passage of time. The fragility of sanity: the narrator's attempt to prove his sanity, his erratic mannerisms while he explains his meticulous plans for killing the old man only prove his madness.
It would be B
Earth's outer shell is divided into several plates that glide over the mantle.
True. Examples would be:
fly to flies
Cry to cries
dry to dries
butterfly to butterflies
