You visit an animal shelter and are in a financial position to either adopt a single dog for $500 or donate the $500to marginally improve the welfare for all dogs at the shelter by providing each dog with slightly better bedding and food.Assume that by marginally increasing the welfare of the rest of the dogs in shelter, this enhances the likelihood that they will be adopted.Of the options below, which is the best choice from an economics perspective and does it make a difference whether this is a "no-kill" shelter, where dogs' lives would not be in danger without your assistance?

multiple choice

a. Donate the $500 to all of the dogs. The total amount of welfare given does depends on the shelter type.

b. Adopt the single dog. The increased help you can give one animal does more good than a small amount of help for all dogs in the shelter.

c. Donate the $500 to all the dogs. It doesn't matter if it is a no-kill shelter or not, it is better to help each animal a little bit than to help just one a great deal.