Which of the following pieces of information could be deleted from a 15-second public service announcement on drinking water safety? a. the city water supply is contaminated. b. paul lining has been named director of public works. c. the "boil water" edict is in force until further notice. d. water should be boiled before it is used or consumed.

The correct answer is letter "B": Paul Lining has been named Director of Public Works.

Explanation:

For a 15-second Public Service Announcement on drinking water safety, the conditions of how water should be drunk must be pointed out. Consequences of not doing that and factual data supporting those ideas could be ideal to draw peoples' attention and to generate an immediate change in their habits. Informing who is the new chief of that service seems irrelevant for that purpose.

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link :