Direction to solve:

DIRECTIONS: Write the letter of the word or phrase that best completes the following sentences.


The students worked on the problem for several minutes before ____________

A) they came to the realization that this problem was one that had no solution

B) realizing that it was insolvable

C) they were able to understand that this problem which seemed merely difficult was, in reality, insolvable

D) the insolvability of the problem was realized by them