This can be an example of nostalgia. (Nostalgia is a sentimental longing or wistful affection for the past, typically for a period or place with happy personal associations according to Oxford Dictionaries)
C. over a period of six months, the turbine produced up to 211 gallons of water per day.
He showed him how to live in nature and do things such as how to make weapons/hunting things, foods, fires, etc. He taught them how to cooperate with their surroundings.
Answer:
Science fiction
Explanation:
unlike fantasy, science fiction doesn't introduce magical powers or beings, everything is supposed to be within some laws of physics.