Final answer:
The phrase 'magnanimous scorn' suggests a large-hearted or noble form of contempt, which best aligns with the option 'Generous contempt'. The correct option is 1.
Step-by-step explanation:
The phrase "magnanimous scorn" in the statement "(Tom) insisted (that Daisy rides with Gatsby) with magnanimous scorn" most likely means Generous contempt. 'Magnanimous' generally means generous or noble in spirit, and 'scorn' refers to contempt or disdain.
Therefore, when combined, the phrase suggests a type of contempt that is expressed generously or nobly, perhaps implying that Tom is displaying a sort of contempt that is grandiose or above petty displays of disapproval, yet it is still fundamentally scornful.