i want to ask that: is it a, b, c or d?

Gone are the days when parents can protect their children from the dangers of the Internet by hoping and praying nothing goes wrong. At a time when children teach other children how to defeat the blocks and filters installed on their computers, serious parents do the work to become computer savvy. Parents now can oversee the sites their children visit with sophisticated monitoring software. They also can read their children's blogs and become familiar with chat language such as


LOL (laugh out loud),BRB (be right back),POS (parent over shoulder)and ASL(age, sex, location). "This is another dimension of parenting that needs to be assumed," says Sam McQuade."We are beyond the place where we can say,'I'm not a computer person.
'You have a responsibility to understand how these devices work and what your kids are doing with them."
answer
A parents are taking an active role in learning about the Internet

answer is a
A parents are taking an active role in learning about the Internet

a......