I would say that the answer should be "Helen's challenges with the frustration of learning to communicate".as a blind-deaf person and the excellent analogy with being shrouded in fog and not having how to determine where she was headed but love giving her the light to find her way and eventually get a degree at university.
It shows how humans have threatened the life of reptiles while they have lived, by also giving an example of turtles being stuck in the nets. That makes the passage more dramatic and gives the reader an effect of shame, and has left an impact/influence.
they are friends who loved to help each other and they liked games
The last one or D. The way that something is transmitted. This is because it says broadcasting. That suggests that something is being sent out to everybody. In this case it just means that it is being announced throughout the school.
