It would be C. He says "Season your admiration for a while." Season means a proper or suitable time, so, that means basically "Chill out for some time and think about this." Therefor, Hamlet should try to wait patiently.
The meaning behind that simile is that ‘they’ are getting tons of gold like they were corn grains which if you’ve seen them, there’s a lot in just one corn. So basically those people were getting a lot of gold.