Which of the following indicates a cockroach problem? O a. Unexplained holes or gnaw marks in food packaging
O b. Loose garbage piled up around the dumpster area
O c. An oily odor and droppings that look like grains of pepper
O d. Small nests made of shredded paper and other soft materials

People who utilizes the progression principle will ensure their exercise program increases in frequency, intensity, time, and type. the changes need to happen gradually in order to ensure they make gains in their fitness program. a person who doesn't utilize the progression principle can still gain health benefits from exercising, but will not continue to improve in cardiovascular fitness.

The answer is d because , safety almost always works, to prevent stds and pregnancy