The use of et al, is appropriate when the A. source has more than two authors. B. publication date isn't known. C. author's name isn't known. D. source has more than three authors.

D. source has more than three authors.

Explanation:

'et al.' is used in the in-text citations where three or than than three authors are to be mentioned for a particular work. The meaning of the Latin word 'et al.' is 'and others'. The last name of the first author is written and then 'et al.' is added to it. A comma (,) is then added along with the year of the publication of the work. In this way, the in-text citation is shortened by just adding the last name of the authors.

she learned to understand that physical beauty wasn’t as important as being a good person.

life 2200 right now look pretty good because on how quickly humans are advansing, life will be a breeze. most by by then would have out lawed disese.most wouldn't have to work anymore beacuse everything would be free. the econamy for most countires would be really good, also by then u.s.a would have probably would have expaned its borders.

so that counculeds my thoghts of how 2200 is you for reading