Its A. it prevents sperm from reaching the egg and fertilizing it.
The first one is atoms cause they are all the same type of particles. The blue one is the molecules that is not compound cause they aren't connected to each other. The other two are compound cause two atoms of two different elements are bonded together.
Well it depends, it contributes because it falls on different ways people believe and how we use things and such
<span>Well for starters, technology could prevent diseases.
Hoped I helped!
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