Familiarity can occur in a new way todaywe can get to know each other through electronic mall and computer chat rooms. computer-mediated communication offers a new twist on the propinquity effect: the fact that someone is thousands of miles away no longer means you can't meet him or her are computer-based relationships the same as ones formed in everyday life? do computer relationships survive when they move from computer screen to facetoface interactions? current research is beginning to explore these questions

according to the passage, the role of the computer in the propinquity effect is

a. surprisingly strong. b. weak.
c. somewhat harmful. d. being studied.

1. negative, complain without fixing anything.

2. she disagrees with them.

the verbal in this sentence is an infinitive. when you want to know the reason of an action, you simply ask the question "why? ". once you know the reason you can answer with "because".

many times we don´t use the word "because" but we can use another expression and that is an "infinitive of purpose". example:

-why did your brother bring a book?

-he brought a book to study.

in the answer above you can see an example of an infinitive sentence, just like in the example of your text. "he couldn´t run fast enough to beat his older sister". so, the answer is infinitive.

to lines side by side going the same direction with no collision