In the passage, the word "tardiness" (line 1, paragraph 2) most probably means______.

A．develop appropriate personal habits
B．stress the importance of punctuality
C．make the people more polite
D．urge the officials to be on time

A．Singapore has always been a highly efficient country in every way.
B．The campaigns are not always very effective in Singapore.
C．Singapore does its best to make its people more polite.
D．Not all the campaigns are launched every year.