QUES:
The vehicles travelled slowly.

What is a plausible cause?

ANS:
It was foggy.

QUES:
The woman dangled the biscuit above the dog.

What is a plausible effect?

ANS:
The dog jumped up.

QUES:
A group of teenagers crashed the party.

What is a plausible effect?

ANS:
The host of the party kicked them out.

QUES:
The spy discovered the enemy's location.

What is a plausible cause?

ANS:
The spy bugged the enemy's phone.