What feat was accomplished by ferdinand magellan? he discovered the cape of good hope. he discovered the florida territory. he circumnavigated the earth. he blazed a route across the panamanian isthmus.

C, he circumnavigated the earth.

Explanation:

Ferdinand Magellan was a Portuguese navigator and explorer who sailed under the flags of both Spain and Portugal. He organized the Spanish expedition to the East Indies, from Spain he sailed around South America, discovering the Straight of Magellan, and then across the Pacific. By doing so, he accomplished the first circumnavigation of the Earth.

Because he was killed in the Philippines, his voyage was successfully terminated by the Basque navigator Juan Sebastian del Cano.

i would go with the last one