The lengths of two sides of a triangle are 12 inches and 4 inches. which of the following dimensions is the third side of this triangle?

The triangle inequality requires the third side be in the range
.. 12 -4 ≤ third side ≤ 12 +4
.. 8 ≤ third side ≤ 16 . . . . . . . . . your answer is the number(s) in this range


Some define the triangle inequality using < rather than ≤. Be careful here.

B is the correct answer