Question

find the appositive. if it is nonrestrictive, set it off with commas. if it is restrictive, submit the text without making any changes.

in september of 1522, the basque navigator juan sebastián elcano became the first ship commander to sail around the world.

Explanation:

The phrase "Juan Sebastián Elcano" is a nonrestrictive appositive: it identifies the specific Basque navigator, and the sentence's core meaning (a Basque navigator became the first to sail around the world) is clear without it. Nonrestrictive appositives require commas to set them off from the rest of the sentence.

Answer:

In September of 1522, the Basque navigator, Juan Sebastián Elcano, became the first ship commander to sail around the world.