Business Grammar: Using Ensure, Assure, and Insure Correctly

This one paragraph contains a business grammar error. Find and correct it.

Most important is insuring your clients are well informed. Information sent to clients so far has been sparse, and this must improve.

Correction:

Most important is ensuring your clients are well informed.

• Assure means "to give someone confidence."
• Ensure means "to make certain."
• Insure means "to protect against loss."

Examples:

Most important is ensuring (making certain) your clients are well informed.

I want to insure this necklace (protect it from loss) for $5000.

I assure you (give you confidence) that the deadline will be met.