Final answer:
Tom Dobson became CEO and President of Whataburger in 2015.
Step-by-step explanation:
The correct answer is B) 2015. Tom Dobson became the CEO and President of Whataburger in 2015. This information is significant as it indicates a change in leadership at Whataburger, a well-known fast-food chain. Tom Dobson's appointment as CEO and President might have brought about changes in the business strategies and operations of Whataburger.