a) I am sure that the internet is a valuable tool for communication, research, entertainment, and business. It has revolutionized the way we access information and connect with others around the world.

b) I am not sure about the long-term effects of excessive internet usage on mental health and social interactions. There are concerns about privacy, cybersecurity, and the spread of misinformation online. It's important to be mindful of how we use the internet and its impact on our well-being.