What is the rule about subjects joined by and?

What point was thomas paine trying to make by relating this antidote

The dogs created when they pulled the christmas tree down and started eating the candy canes.

Identify the sentence with all words spelled correctly. a. ? it's your responsabilitiy to lock up. b. ? it's your responsability to lock up. c. ? it's your responsabilty to lock up. d. ? it's your responsibility to lock up.