Question

complete the sentence with the correct plural. gulf are created by tectonic plate movements that cause a portion of the ocean to penetrate land.

Explanation:

The plural form of "gulf" is "gulfs". In English, for most nouns ending in -f or -fe, we change the -f or -fe to -ves to form the plural. But "gulf" is an exception and simply adds -s.

Answer:

Gulfs