Answer:
The claim that the information in the excerpt would best support is:
D. Screen time should be limited at home and at school.
Step-by-step explanation:
The excerpt defends the idea that screen time can have both positive and negative effects. It can be used for learning useful content, but it can also be used to bully or to shame others. Experts also say that too much availability of technology is not necessarily helpful. For that reason, "[b]oth parents and teachers need to set limits." If parents and teachers should set limits, that means screen time should be limited at home as well as at school, which is precisely the claim conveyed in letter D.