Answer: Electrons being shared between the atoms.
Explanation: I’m currently taking the test and got the answer right.
The red and blue dots represent electrons being shared between the atoms.
The electrons are the spinning objects around the nucleus of the atom of the element in an orbit.
Molecule of methane gas is shown, in which the red and blue dot represents the sharing of electrons to become stable.
Thus, the correct option is B.
Learn more about electrons.
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