What does the phrase environmentally safe mean in the context of the passage?
The argument over the public’s safety regarding high exposure to the chemicals found in pesticides is sparking heated debates across the country. The pressure to move toward more environmentally safe practices to control insects has inspired many new alternatives.
A
using bats as pets to control insects in a controlled environment
B
using chemicals to control insects without harming the environment
C
using natural methods that are harmless to the environment to control insects
D
using aggressive methods that are harmful to the environment to control insects
C
using natural methods that are harmless to the environment to control insects