Read the following paragraph. What topic connects the two underlined sentences?

Boston was hot, and my mother and I were wearing uncomfortable shoes, long pants, and sweaters. There was no escape from the sun. By the time the campus visit started, I was feeling run down, and I dreaded the long walk down Commonwealth Avenue in order to visit the dorms and the gym. Two hours into the visit, I felt like I was trudging through sand and had trouble keeping up with the group. That night, I developed a sore throat so bad I ended up in the hospital, where I was diagnosed with mononucleosis. $"$No wonder you feel awful," the doctor said cheerfully, "Your spleen is the size of a baseball!" Looking back now, I can see that my college visit had been a complete disaster.

the sun

Commonwealth Avenue

doctors

a college visit