Your answer is A. Present perfect
The researchers at the University of Alabama did a study about walking while texting. They found that people who text have four times the chance of getting hit by a car. Texting on a busy street is inconsiderate of other pedestrians. It also causes traffic when people have to wait for you to cross the street. People should stop staring at screens when they can enjoy the view while it lasts.
Hope this helps! (;
Answer:
D. but
Explanation:
Option D is the correct answer.
"But" is the word that best replaces "therefore" in the sentence. The use of "but" is seen when it is used to introduce another statement that is added which is different from what was earlier said.
From the sentence, it is seen that adding "but" joins the two independent clauses together. The first part of the sentence talks about early photography being black and white. While the second part introduces when the color images arrived.
The setting?? Don't really know what you're trying to ask.
