Final answer:
The "he" in the line "Did she put on his knowledge with his power?" in the poem "Leda and the Swan" refers to Zeus, who disguised himself as a swan.
Step-by-step explanation:
The "he" referred to in the line "Did she put on his knowledge with his power?" in the poem "Leda and the Swan" is None of the above. This line is a reference to the mythological story of Zeus, who disguised himself as a swan and seduced Leda, the wife of King Tyndareus. Therefore, the "he" in this line is Zeus.