Identify the following as either a nudge, a push, or neither.

a. The cover of your state tax forms reports that 90 percent of residents pay taxes on time.

b. If your friends gain weight, you are likely to gain weight too.

c. Amazon is required by government to set the default mail option as the standard mail rate.

d. Government taxes in part to redistribute income.

e. A health insurer issues participants credits for exercising and eating healthy foods that they can use to buy products.