Which symptom is a sign of testicular cancer?

Megan is a three-year-old girl. every day, her nanny tells her a story. when her parents get home from work, megan tries to tell them the story. however, she can only retell a few parts of each story. she speaks in short sentences and often plays imaginary games. which type of developmental change is megan experiencing? a. social b. emotional c. physical d. cognitive

How can a person  best  reduce the risk of injuries on the road?  

In this model, what do p, s, and a bases represent?