Read the following topic sentence. Which answer would best support the main idea?

Tablets and smartphones are being used in classrooms to connect education and technology.

A.
Students need to learn to use their smartphones so they can call during emergencies.
B.
Teachers use educational apps such as Operation Math Code Squad to make learning interactive.
C.
Tablets and smartphones are being updated regularly to provide better user-friendly options.
D.
The iPad is a tablet that many students enjoy using at home.