Answer:
Option 1 .A definition for the word "avarice" within the sentence "I made a New Year's resolution to be generous, but i gave in to avarice instead" is the concept of greed.
Step-by-step explanation:
As the sentence expresses, the person made the New Year's resolution to be more generous, but instead ended up giving to avarice. Avarice is a term used to define a desire to gain and withhold wealth and material possessions. Greed is a term that originally was related to a desire to an uncontrollable hunger and appetite, and that was connected to being overtly sensual. But with time the term greed started to be used in a much more general sense, and it can be consider a synonym of the term avarice. Both of these terms are the opposite of being generous, as they both reflect on a person's desire to have things for themselves instead of giving them to others.