Benetton has often used ads that send a social message, such as showing aids victims dying or featuring death row inmates, to make people aware of these issues. what type of advertising is this?

This is controversial advertising. Benetton is one of the few advertisers without fear of risk or mistakes . Transgressor par excellence, can boast of being the advertiser with the largest number of campaigns that have managed to leave no indifferent to any receiver. Since the photographer Oliviero Toscani began working for the brand in the 1980s, Benetton has strived to maintain a solid creative line , through images of great artistic quality that make emphasis on the multiplicity of colors (both their clothing and human races), the transmission of values and social reporting . 

the answer is a wheel