Answer:
Studies show that people who spend a significant amount of time on social media experience increased anxiety and decreased self-esteem. Watching everybody else's milestones and achievements fly through your feed doesn't make you happy for your pals, it makes you unhappy about your own (seeming) lack of accomplishment.
Explanation:
D. Pathogens can be found in saliva and mucus drops from sneezes
B makes the most sense to me so I would go with that
Not 100% sure but I'd go with A(:
