Which of the following integers is closest to zero?
(A) -1101
(B) 1011
(C) -1010
(D) -1001
(E) 1110
The positive value of any number is equal to the distance that the number is away from zero along a number line.

The smaller the distance a number is away from zero along a number line, the closer the number is to zero.

Ignoring negative signs (that is, we consider all 5 answers to be positive), the number that is closest to zero is the smallest number.

The smallest number from the list $\{1101,1011,1010,1001,1110\}$ is 1001 .

Of the given answers, the number -1001 is the closest number to zero.

ANSWER: (D)