Final answer:
Matt Kenseth won NASCAR Rookie of the Year over Dale Earnhardt Jr. in 2000.
Step-by-step explanation:
The subject of this question is Social Studies as it pertains to the history of NASCAR and the Rookie of the Year award.
In 2000, Matt Kenseth won the NASCAR Rookie of the Year award over the son of a legendary driver Dale Earnhardt Jr. (option A) among the other options mentioned. Dale Earnhardt Jr. is the son of the late NASCAR legend Dale Earnhardt Sr.
Thus, the correct answer is A) Dale Earnhardt Jr.