Hiya!
Using a popular song in a video your making is most definitely going to attract more viewers. It's all about making the video appeal to the person.
^Hope this helps
The answer to this is C :D
Huh? I don’t understand your question... please be more specific so we can help you
Try restarting it. If you can’t restart because the screen is frozen maybe just turn it off and back on. If you already tried restarting and it still didn’t fix the problem, just give it some time. The computer will reset itself eventually which should fix the problem.
The answer to this should be B. Worm. A pinion is a the smallest gear out of the listed ones above. spur would be next then wheel and the biggest if them all would be the spur. I'm not completely sure if my answer is 100% correct, but I feel confident enough about it. Hope this helps. :)