Which of the following statements about agrochemicals is correct?

The correct answer is Option (3) → Both (1) and (2)

Agrochemicals are the fertilisers and pesticides used on crops. They helped raise yields during the Green Revolution, but they also have two costs: money and harm to the environment.

Option (1) Agrochemicals are costly for farmers. — Correct statement, but it is only one of the correct points, so on its own it is not the answer. For farmers in developing countries, agrochemicals are often too expensive.

Option (2) Agrochemicals have adverse effects on the environment. — Correct statement, but it is only one of the correct points, so on its own it is not the answer. Chemical pesticides are toxic and pollute soil, ground water, fruits and vegetables.

NCERT Extract:
Biotechnological Applications in Agriculture – “… Increased yields have partly been due to the use of improved crop varieties, but mainly due to the use of better management practices and use of agrochemicals (fertilisers and pesticides). However, for farmers in the developing world, agrochemicals are often too expensive, and further increases in yield with existing varieties are not possible using conventional breeding.”
Microbes as Biocontrol Agents – “… In modern society, these problems have been tackled increasingly by the use of chemicals – by use of insecticides and pesticides. These chemicals are toxic and extremely harmful, to human beings and animals alike, and have been polluting our environment (soil, ground water), fruits, vegetables and crop plants.”