What should you avoid when sending emails to a group of people on a mailing list?

Which of the following is not advised when writing the minutes of a meeting?

Memos can save ____

Which of the following is/are (an) example/s of redundancy in business writing?

He washes his car with 'sedulous' attention.

When writing an executive summary, which of the following is a mistake to avoid?

The ____ was delivered by a ____ in his fifties.

Which statement correctly contracts 'it is?'

Which closing phrase is inappropriate for a business letter?

Joe ____ in his report later today.

Which sentence is most properly worded?