The given figure shows the light-harvesting complex of PS I the unidentified elements are as follows: A- PS I, B- electron acceptor, and C-P700
So, the correct answer is 'A-PS I; B-e−acceptor; C-$P_{700}$
Question 11 The correct sequence of flow of electrons in the light reaction is (a) PS II, plastoquinone, cytochromes, PS I ferredoxin (b) PS I, plastoquinone, cytochromes, PS II, ferredoxin (c) PS I, ferredoxin, PS II (d) PS I, plastoquinone, cytochromes, PS II, ferredoxin