Question

complete the sentence with the correct plural.
deputy sheriff
this summer, 　　 from counties across the state will meet for a
conference on forensics and law enforcement.

Explanation:

To form the plural of "deputy sheriff", we follow the rule for compound nouns. For "deputy sheriff", we make the main noun "sheriff" plural. "Deputy" remains in its singular form as an attributive noun, and "sheriff" becomes "sheriffs". So the plural form is "deputy sheriffs".

Answer:

deputy sheriffs