State requires all children under the age of 16 to attend school. Father wants his 14 year old son to drop out of school and work 35 hours a week on the family farm. Which of the following is father's least persuasive legal argument.

1. The law interferes with fathers economic liberty.

2. The law interferes with religious liberty of father, son, and their community.

3. The law interferes with fathers right to direct the upbringing of his child.

4. The state cannot demonstrate a compelling state interest in educating children beyond age 14.