The correct answer is D.They can wash away some pathogens.
Explanation:
Tears provide the first line of defense to the body. The foreign particles and dust that enters the eyes are washed away by tears. It also prevents the eyes to become dry.
Tears also have antibacterial properties because it contains lysozyme that kills the bacteria by destroying the cell wall of bacteria so it protects the eyes from bacterial infection. Tears also transport the nutrient and oxygen to the eye surface as blood vessels are absent there.
Therefore tears can provide healing capacity by washing out some pathogens from the eyes.
I think its good for people with overweight to maintain exercise and healthy eating. making people feel bad about them selves isn't going to make an overweight person lose weight.
