Final answer:
Benvolio wants Romeo to go to the feast at Capulet's Mansion to help him forget about Rosaline and find happiness elsewhere.
Step-by-step explanation:
Benvolio wants Romeo to go to the feast at Capulet's Mansion in Act 1.4 of Romeo and Juliet because he hopes that by attending the event, Romeo will forget about Rosaline, whom he is pining for. Benvolio believes that Romeo will be able to compare Rosaline to other beautiful women at the party and realize that she is not as remarkable as he thinks. Benvolio is trying to help Romeo move on from his unrequited love and find happiness elsewhere.
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