As Human Civilization Spread Around the World,there Were Species That

As human civilization spread around the world,there were species that benefited greatly from new human-made habitats.However,generally with the expansion of human populations and agriculture,

A) there has been an increase in biological diversity.
B) levels of biological diversity have remained the same,with human-associated organisms replacing the few natural species displaced.
C) biological diversity has decreased for a short time,rebounding to higher levels relatively quickly.
D) biological diversity levels drop dramatically.