Which environmental factors influenced Jacob’s desire to join a gang? Check all that apply. Jacob is 15 years old. In his short life, he has witnessed his father hitting his mother. He has also heard his dad use foul language around his friends and even hears them discuss recent criminal activities in the community. Every time they mention criminal activity, his father’s friends laugh and brag about what they did. From what Jacob sees, he thinks that gang life is not all that bad. He wants to join a gang just like his dad.