Biology

The correct answer is B. They can reduce herbivore populations.

Invasive predators often target native herbivores as a food source. Without natural predators or defenses against the invasive species, herbivore populations can be significantly reduced. 

The other options are less accurate:

A.They help increase the number of prey species at higher trophic levels: Invasive predators generally reduce the numbers of prey species, rather than increasing them, especially at lower trophic leve...