Plz hurry it's
what has been the impact of declining harvests and years of drought on african subsistence farmers?

a. subsistence farmers refuse to change their traditional ways and do anything different from their forefathers.

b. subsistence farmers continued to plant crops such as maize to make sure they can feed their family.

c. subsistence farmers have begun to plant some drought resistant crops and break away from their traditional crops.

d. subsistence farmers have turned to nomadic pastoralism in search of profits.

Which statements describe sustainable development? multiple answer choice -fishing does not remove more fish from water systems than can be replaced by the number of fish that will be born to replace them. -sustainable development is development that is designed to improve the economic conditions in less-developed countries. -sustainable development is mainly a regional issue. -sustainable development means water is used at a rate that won't reduce the amount available for future use. - sustainable development policies only need to be concerned with environmental protection. - trees cannot be cut down faster than the number that will be replaced by new growth.