Please choose the correct answer to the question: In Costa Rica a small tree, the acacia, provides shelter and food for ants. The ants protect the acacia by removing other insects and vines that might harm it. Which term best describes the relationship between the acacia and the ants?

Answer1: competition Answer2: mutualism Answer3: parasitism Answer4: predation

Answer format: answer1/answer2/answer3/answer4
Answer: answer2