Final answer:
Without specific information on the individual named Chris, it's not possible to determine the athletic activity he took up as a teenager. (option d)
Step-by-step explanation:
To accurately answer which athletic activity Chris took up as a teenager, we would need more specific information about who Chris is, since the provided reference does not mention an individual's sports participation. In general, it could be noted, a significant number of US teens are involved in popular sports such as youth football, baseball, and basketball, given the possibility of playing at collegiate or professional levels. However, without specifics on Chris's athletic pursuits, we cannot definitively state whether he took up skateboarding, rowing, running, or basketball.
Hence,the answer is option d