Of the options given, the correct one is "Ancient grudges or long term family feuds are difficult to overcome."
Explanation:
The other options are incorrect for the following reasons:
Romeo and Juliet's forbidden love did not overcome the obstacles. They ended up killing themselves.
Revenge, at least in the story, led to innocent people suffering and dying.
Romeo and Juliet tried to deceive their family but weren't able to do it due to a misunderstanding. Romeo drank poison because he thought Juliet had died. She, however, woke up from a drug induced sleep and killed herself after realizing her lover had died.
