What are the outermost electrons of an atom

Valence Shell

Explanation: The Valence Shell is the outermost orbital of an atom. The Valence Shell electrons are used in making chemical bonds and are the reason the atom has its physical and chemical properties.

organisms are more likely to be more preserved in mud than sand because mud is moist and wet, while sand is very dry.

i would say b

explanation:

but i think i would need more information than that