Is the Annual Productivity of a Typical City Backyard Large

Multiple Choice

Is the annual productivity of a typical city backyard large enough to support a house cat or will the cat require food supplements in order for it to survive?

A) The producer productivity is large enough for the cat to survive.
B) The cat must be fed additional food or it will starve.
C) The cat will be able to survive if there is at least one fruit tree in the backyard as part of the producer productivity.
D) The cat will be able to survive if the backyard consists only of grass.
E) The producer productivity can support the cat along with several offspring.