The greatest negative integer is

• (a) - 100
• (b) does not exist
• (c) - 1
• (d) - 9

The concept of the greatest negative integer can be a bit tricky. Negative integers are numbers less than zero, such as -1, -2, -3, and so on. Among the options provided, the greatest negative integer is the one closest to zero.

Analyzing the Options

• -100: This is a large negative number.
• -1: This is the smallest negative integer, closest to zero.
• -9: This is also a negative number, but further from zero than -1.
• Does not exist: This option suggests there is no greatest negative integer.

Identifying the Answer

Among the choices, -1 is the greatest negative integer because it is the least negative value. Therefore, the correct answer is:

(c) -1