Read the passage below. Noise pollution is defined as the "presence of unwanted sound.” One major source of noise pollution comes from transportation—namely, motor vehicles. Too much exposure to noise pollution has been linked to many serious side effects, such as hearing loss, stress, and sleep disturbance. Since noise pollution has been linked to many harmful effects, many people feel it is time to take a look at what measures can be taken to reduce noise pollution in the United States.

The beginning of which sentence indicates a cause-and-effect relationship?

“One major source of noise pollution”
"Noise pollution is defined as"
“These sounds may be considered”
“Since noise pollution has been linked”

explanation:

you only need simple sentences to answer this. just answer these questions.

what do you think annie thinks of the mother? do you think annie believes the mother is a fit mother for helen.

what about the father? what would annie think of him? she might not like him, but does she respect him.

how about the son? would annie think he is the only voice of sanity in an insane place?

what about helen herself? this is the key question. how does she see helen? what do you suppose she thought her first job was going to be.

these aren't hard questions. just state the obvious. annie is not that well educated: she just knows what she has to do. write it that way.

you can do it if you've read the book or seen the play or movie.

- "when these words are put together to convey a meaning it is known as a sentence. a sentence is a group of words that makes complete sense. placing of words in a sentence is very important. the second sentence is a question."

dont know what all this is english this is america.