The key ingredient for public housing, which is focused on poor people lease a dwelling, is:
a. a loan
c. a grant
b. a subsidy
d. a down payment

The right answer for the question that is being asked and shown above is that: "b. a subsidy." The key ingredient for public housing, which is focused on helping poor people lease a dwelling, a subsidy. This is the correct answer as far as the public housing is concerned.