Although televisions currently outnumber residents in the average American household, the argument concludes that this fact will soon be reversed. The correct answer choice must strengthen the conclusion that the average household will again contain more residents than television sets. <- agreed

(A) This choice is irrelevant to the conclusion. The fact that individuals increasingly enjoy watching popular shows in the company of others does not affect how many televisions these individuals possess in their places of residence.

(B) This choice simply expresses a fact about U.S. demographics. However, nothing indicates that these immigrants alter the purchasing behavior of televisions by American consumers.

(C) CORRECT. This choice indicates that new devices are replacing the main function of the television: a primary source of information and entertainment. This fact, in combination with the increasing expense of television sets, supports the conclusion that fewer televisions will be purchased in the future. <- i don't agree with that bold part

(D) This choice weakens the conclusion by undermining a premise on which the conclusion is based. If retail costs for televisions were to decline, consumers would not be less likely to purchase televisions in the future.

(E) This choice is irrelevant to the argument. Even if televisions take on some roles associated with other household devices, we cannot claim that there will be fewer television sets per household as a result; indeed, there may be more television sets per household, if television sets can do a greater variety of tasks.