French magazine Science and Life reports that only female mosquitoes can bite people. Female mosquitoes need some sugary substances in the blood, and human blood contains some substances that are indispensable for the maturation of mosquito eggs. Therefore, those who secrete breathe vigorously People who are rich in cholesterol and vitamin B in their blood are more likely to be the targets of mosquitoes. In addition, people who use perfumes, soaps and floral shampoos need to be especially careful. Which of the following options do you think is defective? ["Cholesterol and Vitamin B in the Blood May Help Improve Female Mosquitoes' Reproductive Capacity.", "Male mosquitoes don't bite people because they don't need sugary substances.", 'In the same environment, some people may be bitten more by mosquitoes than others, probably because these people have a scent on their bodies and are likely to attract mosquitoes.', 'A special ability that mosquitoes formed during the evolution process is to screen the objects to bite. This ability helps them to breed offspring.']