Why do we call estrification a condensation reaction​

Iknow the answer is a but i don't know why

Phosphorous can form an ion called phosphide, which has the formula p3−. this ion can form an ion called phosphide, which has the formula p3−. this ion properties very similar to those of pforms when a phosphorus atom loses three protonsis called a cationcontains 18 electrons

This statement about matter and its behavior is best classified as a