Light excites a molecule of chlorophyll in causing electrons to be "boosted" to a higher potential.
a. photosystem iii
b. photosystem ii
c. photosystem i
d. none of the above

The correct answer is option B.  

Explanation:

When light trapped by the chlorophyll in the reaction center of the photosystem 2, electrons get excited.

This electron or energy is transferred along from one chlorophyll pigment molecule to another chlorophyll pigment until electron reaches to a special couple of chlorophyll molecules that send their electrons to the final electron acceptor that is plastocyanin in photosystem 2.

These electrons come from the photosystem 2 and directly proceeding Photosystem I from plastocyanin

Thus, the correct answer is option B.

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