What does JUMP ON THE BANDWAGON mean?

Choose the option that best explains the expression in capitals:

When fried plantain chips became popular, many traders in Bo JUMPED ON THE BANDWAGON.

1. AThey joined in what was popular
2. BThey rode on a lorry with a band
3. CThey stopped selling plantain chips
4. DThey moved their shops out of Bo

Choose the option that best explains the expression in capitals:

The schools from Kenema and Makeni were NECK AND NECK until the last question of the quiz.

1. AThey were level with each other
2. BThey were far apart in points
3. CThey were holding hands
4. DThey were both very tired

Choose the option that best explains the expression in capitals:

Because it was not signed, the agreement between the two traders was NULL AND VOID.

1. AIt was clear to both of them
2. BIt had no legal force
3. CIt was kept secret
4. DIt was fair to both

Choose the option that best explains the expression in capitals:

Kadiatu came first last term, but her teacher warned her not to REST ON HER LAURELS.

1. ANot to fall asleep in lessons
2. BNot to boast about it
3. CNot to forget her old friends
4. DNot to stop working after success