Which one is it (picture is above) it's for the story MONEY TELLS THE STORY in COMMONLIT ​

=>Jones discovered that the bills had several things in common. They showed slaves working in jobs related to farming. Many of them portrayed the slaves as content, healthy, and smiling. None of the bills showed the hardships of slavery.

D. sad slaves were not shown on the bills.

B). Respectfully.

Explanation:

A formal mail as the title suggests is described as the mails usually composed for business purposes or to unknown persons or authority. Such emails employ a formal language in order to produce an effective response from them.  

As per the question, the best way to revise the closing 'talk to you later' of a formal email would be 'respectfully' as it proposes a formal tone to the e-mail that would offer a professional mood and create the desired impact. It would also help avoid the use of informal language as it may affect the efficacy of the message. Thus, option B is the correct answer.