Dashes, Parentheses, and Periods

Identify the error$($s$)$ in dashes, parentheses, and$/$or periods in the following sentences and choose the best revision.

The new hire was hired because he had the necessary qualification an MBA.

The new hire was hired because he had the necessary qualification, an MBA.

The new hire was hired because he had the necessary qualification $-$ an MBA.

Identify the error$($s$)$ in dashes, parentheses, and$/$or periods in the following sentences and choose the best revision.

Our three best selling tools the hammer, the screw driver, and the wrench will all be on sale next week.

Our three best selling tools $-$ the hammer, the screw driver, and the wrench $-$ will all be on sale next week.

Our three best selling tools, the hammer, the screw driver, and the wrench will all be on sale next week.

Identify the error$($s$)$ in dashes, parentheses, and$/$or periods in the following sentences and choose the best revision.

The president announced to everyone's surprise that he was retiring.

The president announced, to everyone's surprise, that he was retiring.