Which of the following could lead to a loss of habitat?
1) Farmers in forested areas clear trees to grow crops.
2) Goat herders graze their herds in the area surrounding their village for many years.
3) The course of a river is changed to provide space for factories.

Select one:
a.1 only

b.3 only

c.2 and 3

d.1, 2 and 3