I believe you answer is they both transmission signals through radio waves.
C. Phobias are irrational fears about something. They are "irrational" because a person may fear something that would not logically pose any real threat or harm, such as fearing small spaces (claustrophobia) like elevators because one might feel like they are suffocating, even though elevators obviously do not cause people to suffocate.
C. Loss of calcium.
Kwashiorkor is a protein malnutrition.
Marasmus is a protein deficiency.
Loss of Vitamin C is just Vitamin C deficiency, also known as scurvy or scorbutus.
C , I am thinking with common sense rather than taught information. I sharing with confidence, because this is where the CDC, and other organizations come in.