Problem: OPTIONS:
- HIV
- lack
- DDT
- p53
- antibiotics
- h2o
- memory cells
- HPV
Q: You are presented with the quiz "what causes the immune system to not work properly?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "immunodeficiency occurs when the immune system is not working properly" and "hIV, the human immunodeficiency virus, is a retrovirus". So, what's the best answer to the question?
Answer: HIV
Problem:OPTIONS:
- plants
- h2o
- alpacas
- fish
- otters
- toads
- cacti
- precipitation

You are presented with the quiz "what are adapted to very dry environments?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "plants that are adapted to very dry environments are called xerophytes" and "bromeliads and cacti are xerophytes". So, what's the best answer to the question?
****
A: cacti
You are presented with the quiz "What uses stems to store water?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "astem is used to store water by some plants" and "ferns are vascular plants". So, what's the best answer to the question?
OPTIONS:
- bacteria
- humans
- Oak
- rocks
- trees
- ferns
- fens
- amoebae
ferns
You are presented with the quiz "A sandbar is formed by " But you don't know the answer, so you turn to your teacher to ask for hints. He says that "asandbar is formed by water moving sediment downstream" and "some sediment comes from natural erosion". So, what's the best answer to the question?
OPTIONS:
- loose soil
- magma eruptions
- wind currents
- near the shoreline
- seismic activity
- natural erosion
- flooding
- Physical weathering

Answer: natural erosion
Question: You are presented with the quiz "What can't cells survive without?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "cells cannot survive without oxygen" and "life is responsible for oxygen in the atmosphere". So, what's the best answer to the question?
OPTIONS:
- money
- atmosphere
- vapor
- friends
- Energy.
- Energy
- Light
- Chemical energy
Answer: atmosphere
input: OPTIONS:
- relocation
- organs
- diversity
- size
- recovery
- animals
- Plants growth
- color Now, answer this question: You are presented with the quiz "Population size influences the chances of what within a species?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "population size influences the chances of a species surviving" and "diversity within a species is essential for survival". So, what's the best answer to the question?
A:
output:
diversity