What are three techniques you can use to maintain a safe path of travel?

Know where your going 
pay attention 
use placemarkers

Answer d would be the best answer, for he wants to have part in biotechnology. an ekg technician is quite similar.

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.