Many animal and crop management procedures took place across the centuries. The option which highlights the one taken as an organic procedure is a)...

Many animal and crop management procedures took place across the centuries. The option which highlights the one taken as an organic procedure is
a) spread of cheap nitrogen fertilizers as an agricultural revolution.
b) use of fertilizers and pesticides to plant large quantities of simple crop.
c) grow of crops through animal manure and compost ever.
d) development of new crops through altenative technologies.
e) enlargement of single crops on replacement of the soil quality.