An Oil-Water Mixture Works as an Insecticidal Spray Against Mosquitoes

Multiple Choice

An oil-water mixture works as an insecticidal spray against mosquitoes and other insects because it

A) coats their lungs.
B) blocks the openings into the tracheal system.
C) interferes with gas exchange across the capillaries.
D) clogs their bronchi.
E) prevents gases from leaving the atmosphere.