Which line from utopia is an example of an anecdote?

a. the folly of men has enhanced the value of gold and silver because of their scarcity; whereas, on the contrary, it is their opinion that nature, as an indulgent parent, has freely given us all the best things in great abundance . .

b. it is certain that all things appear incredible to us in proportion as they differ from known customs; but one who can judge aright will not wonder to find that, since their constitution differs so much from ours, their value of gold and silver should be measured by a very different standard . .

c. i never saw a clearer instance of the opposite impressions that different customs make on people than i observed in the ambassadors of the anemolians, who came to amaurot when i was there.

d. but they much more admire and detest the folly of those who, when they see a rich man, though they neither owe him anything, nor are in any sort dependent on his bounty . .