if c < -1 and d < 1, which of the following cannot be a value of the fraction c/d ?

A) -2
B) -1
C) 1/2
D) 1
E) 2

if c/d = -1, c = -d

If c and d are both negative, then c/d > 0
So, since |c| > 1 and |d| < 1, c cannot be -d.