something that is beneficial is\n○ blank\n○ official\n○ helpful\n○ familiar

something that is beneficial is\n○ blank\n○ official\n○ helpful\n○ familiar

something that is beneficial is\n○ blank\n○ official\n○ helpful\n○ familiar

Answer

Brief Explanations:

The word "beneficial" means having a favorable or helpful effect. Among the options, "helpful" has a similar meaning.

Answer:

C. helpful