I'd say that the technique of satire used by Wilde in The Importance of Being Earnest is b. ridiculously exaggerating the importance people such as Gwendolen place on a name.
She knows that she wants to marry a man named Ernest, because that is a good and decent name - when she finds out that Ernest's name is actually Jack, which is a common and mundane name, she sort of changes her opinion about him based on such an irrelevant fact.
The second option is the correct one. 'Conveyor' and 'halting' are spelled correctly. Also, the comma before halting is necessary so as to give the idea of consequence.
C. They sing and dance to celebrate. or
A. Pray and give thanks to God.