Absorption lines at multiple wavelengths can be simultaneously produced because?

Question

possiblities are :
a. Most atoms contain multiple electrons, which can simultaneously execute different energy transitions.
b. Different atoms within the same light-absorbing material are doing different things at the same time.
c. Most atoms contain multiple neutrons and protons, which can each absorb a different photon at the same time.
d. An electron can execute multiple transitions at once, thanks to quantum mechanics.

Answer 1

Hi. Absorbtion lines are caused when a photon's energy is transfered to an electron. The answer is yours to find when you consider how many electrons are in each element.

Answer 2

B.