How do you make a word plural that ends in o preceded by consonant?

There's no single rule for making words ending in "o" preceded by a consonant plural. You need to consider the word's origin and common usage. Here's a breakdown:

General Rules:

* Add -es: This is the most common rule for words ending in "o" preceded by a consonant.

* Examples: hero -> heroes, potato -> potatoes, tomato -> tomatoes

* Add -s: Some words ending in "o" preceded by a consonant take the regular -s plural. These often come from Greek or Latin.

* Examples: photo -> photos, piano -> pianos, solo -> solos, kilo -> kilos, memo -> memos

Exceptions:

* Words with specific rules:

* Musical terms: alto -> altos, soprano -> sopranos

* Words of Italian origin: studio -> studios, cello -> cellos, motto -> mottoes

When in doubt, consult a dictionary!

It's best to check a dictionary for the correct plural form of a word if you're unsure.