She looks very red because she...outdoors all day yesterday

Read the passage from an argumentative essay. many endangered species are currently threatened by climate change. there are some laws already in place, but are they effective enough? anyone with a conscience knows that these creatures deserve the chance to survive without outside threats impeding their survival. i suppose this is a tough decision for lawmakers, but i hope they choose wisely. which statement best evaluates the claim in the passage?

Ineed . we can conclude that bartenders and street musicians “seed” their tip cups mainly to: a. make it look as if they are rich b. offer money to others c. encourage people to tip them d. all of the above

Which fits best in the empty box above?