B) Vaginal
Vaginal is always the best option, all these others have a higher risk of damage to the internal glands.
Nutrition is an important thing in regards to quality of life. With adequate nutrition your body will have the nutrients and vitamins that are vital in keeping the homeostasis of our bodies intact, and when this happens, you are feel good. However without adequate nutrition you are predisposed towards diseases that result directly from the lack of adequate nutrition (Like Bari-Bari if you lack Vitamin b12) or your body is inadequate when fighting illnesses like the flu because it doesn't have the energy and nutrition required to help fight.
Internal temperature, I believe.
Answer:
between-subjects design
Explanation:
According to my research on different experimental designs, I can say that based on the information provided within the question the best way to make sure that the internal validity will not be influenced by an outside event is to switch to a between-subjects design. This type of design is an experiment design that has two or more groups of subjects each being tested by a different testing factor simultaneously. Since they are done simultaneously it significantly reduces outside influence.
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