The correct sentence is C, because 'driven' is the past participle, part of the present perfect tense. Present participle would be 'driving', it has -ing form, whereas B is not correct because 'helped' is just past, not a past participle.
Hello Bluekola888,
Nice to meet you!
Your questions: What skill is "critical" to success in online learning?
Your answer: Skills needed for online learning would be computer literacy, you have to be an active learner, you have to be good in reading and writing. But the most critical that I BELIEVE are CRITICAL is having time commitment and being self motivated.
Thanks for your time and have a great day!
~Rendorforestmusic
Answer:
Britain should get the last two options, whilst Ireland should get the first two options.
Explanation:
Hope this helps, if you don't understand just comment and I will elaborate on my answer.