Question

part a
the simplest unit of matter that still retains the properties of an element is _.
view available hint(s)
a cell
an electron
a compound
an atom

Explanation:

An atom is the simplest unit of matter that retains the properties of an element. A cell is the basic unit of life, an electron is a sub - atomic particle, and a compound is made up of two or more different elements.

Answer:

D. an atom