Complete the following text correctly: A typical forest in a certain region was cut down and, in its place, a cultivated field was established whic...

Complete the following text correctly: A typical forest in a certain region was cut down and, in its place, a cultivated field was established which, after a few years of planting, ended up being abandoned. Then, a(n) ______I ecological succession occurred, which ended with the establishment of vegetation similar to ______II.


a) primary - desert.
b) primary - original forest.
c) primary - cultivated field.
d) secondary - cultivated field.
e) secondary - original forest.