Please choose the correct answer to the question: The weight of heavy machinery compacts soil, especially when it is wet. Why do farmers avoid driving their machinery across wet ground?

Answer1: Compacted soil will absorb too much water. Answer2: Plants cannot grow when soil is compacted. Answer3: Minerals are destroyed when soil is compacted. Answer4: Compacted soil increases soil acidity.

Answer format: answer1/answer2/answer3/answer4