Pesticide use
a) may be a necessary part of modern technological agriculture
b) can be eliminated by changing the season when crops are planted
c) will be eliminated as pests decrease as a consequence of years of pesticide use
d) poses no environmental threat in this country
e) will not be a problem as we learn to genetically modify predators

Option A.

Explanation:

Pesticide are defined as the substances which are used to control pests, and  weeds in agricultural practices. Herbicide, insecticides, nematicide and fungicide are the examples of pesticides.

Now a days use of pesticide has become a necessary part of modern technological agriculture. Agricultural technology has evolved  a lot from past and several benefits of pesticides are found that affect production and quality of crops. Other advantages of pesticides that makes its use necessary includes improve economic status of countries due to increases in yield using pesticide that reduces pests effect on yield; pesticides undergo photochemical transformation and produces metabolites which are non-toxic to human health and the environment; and Insecticides are used to control the insects which caused diseases like malaria.

Hence, the correct option is A.