The critical reasoning question is based on a short argument, a set of statements, or a plan of action. For each question, select the best answer of the choices given. Pesticides are used to control various pests and disease carriers such as rats, ticks and mice. They are used in agriculture to control weeds and fungi too. A pesticide is a chemical or biological agent that kills pests. Although pesticides have benefits, some have drawbacks too if they are used in larger quantities. Given below are some options, select the one which is not one of the the advantages of pesticides. Correct Answer Pesticides are poisons and can cause a number of health effects on humans. Option 4 is the correct answer as it talks about how pesticides affect the humans. Pesticides are toxic and when used more then a certain amount can cause a lot of issues to humans. If pesticides are used in more quantity in agriculture then the crops consumed by humans will have a very bad effect on their health. Other options talk about the advantages of using pesticides, such as they are used to kill insects as wasps, ants or mosquitoes. They are also used to kill weeds. A common pesticide DDT is sprayed on the house walls which prevents malaria.