Afarmer has some problems with the quality of his soil. the soil seems to have lost some of the nutrients that crops grow. now the farmer is unable to grow crops on his field. what should the farmer do to ensure that the nutrients in the soil are replenished?

Plants use soil nutrients in their metabolic processes, but these nutrients are not eternal, so as the plant consumes nutrients from the soil, the stock of these nutrients will decrease, so it is necessary to let the soil "rest" for a while, so you can restore nutrient levels.

One way to do this is to use the agricultural technique called "Landing," which is the method of planting that divides the land into three parts: two cultivated parts and one at rest. The rest part remains without planting for the recovery of its nutrients for about a season. Then there is a relay between the areas.

from the conditions of the working class in england by friedrich engels,the main idea is :

the correct answer is

d) rocket launcher