The olmec people

a) constructed giant stone monuments.
b) built pyramids out of blocks of stone.
c) developed a writing system with pictographs.
d) created a system of numbers that included zero.

answer; i believe the above statement is (true);

d

step-by-step explanation:

an inequality is an expression which means more than one number is a solution. we graph the solutions on a number line to show all possible values. we graph using circles and arrows.

this is a filled in circle on -2 so this is . this means only answers c and d are options.

answer d points to the right.