Final answer:
Elizabeth Bennet firmly rejects Mr. Collins's marriage proposal in 'Pride and Prejudice', emphasizing her determination and desire for a happy marriage over societal expectations.
Step-by-step explanation:
When Mr. Collins proposes to Elizabeth Bennet in chapter nineteen of Pride and Prejudice, Elizabeth reacts with a decisive refusal. She does not waiver in her rejection of his offer despite his insistence and the societal expectations placed upon her.
Elizabeth's response is a mixture of incredulity and irritation; she is firm and clear in expressing that she cannot accept a proposal that would make her unhappy. Mr. Collins, on the other hand, has difficulty accepting her first refusal, thinking it to be a typical modest denial expected from a lady during those times. Elizabeth's determination and her strong-willed nature are emphasized through her interaction with Mr. Collins during his proposal.