Livestock farming is a very expensive source of food, leading people to believe that eating lower on the food chain is a good alternative. which of the following statements best explains why it is so expensive?

a)

the livestock are inefficient at converting plant food into meat.

b)

it is in high demand as the preferred food source in may developing countries.

c)

it is very rich in protein.

d)

a large amount of land is needed to house and feed the animals.

e)

it isn’t expensive at all; livestock is available to everyone.