Final answer:
In 2007, RIM's dominance over the smartphone market began to erode quickly with the introduction of Apple's iPhone, which was able to cater to the needs of the mass market better than RIM's Blackberry. Hence the correct answer is option A and C
Step-by-step explanation:
In 2007, RIM's dominance over the smartphone market began to erode quickly with the introduction of Apple's iPhone. The reason for this was that the iPhone was able to cater to the needs of the mass market, both the early and late majority, better than RIM's Blackberry.
The iPhone offered a revolutionary touch-screen interface and a wide range of features that appealed to a larger audience. It was not only a phone but also a portable computer capable of performing tasks that previously required a desktop computer.
Hence the correct answer is option A and C