The most appropriate antonym of the underlined word "endure" in the given sentence is:

Option 3: Resist

Explanation: The word "endure" means to suffer or withstand something, in this case, hunger and cold. Its antonym should convey the opposite meaning, indicating the ability to avoid or oppose such conditions. Option 3, "resist," fits this description as it means to withstand the force or effect of something, to refuse to accept or comply with it. Therefore, option 3 is the most appropriate antonym for "endure" in this context.