Which factor plays the biggest role in delaying the detection of childhood diseases?
a. high rate of homeschooling
b. lack of knowledge of disease
c. junk food
d. children's lack of exercise

I'm thinking it would be lack of knowledge of disease. If a parent doesn't know about childhood diseases then they won't know what to look for. Example, my newborn nephew had a cough and congestion, they took him to the ER last night and found out he has DSV and that he most likely got it from his older sisters who also have a cough.

Musculoskeletal or gastrointestinal