In the neutrality test, which of the following conditions must be met as a condition of restricting religious expression in the course of legitimate state action?

a. It must apply only to one faith.
b. It must not single out a specific faith over nonfaith.
c. It must require a wall of separation between faith and nonfaith.
d. It must apply only to nonfaith, disregarding any faith-based action.

b. It must not single out a specific faith over nonfaith.