Inmates have to be given a reasonable opportunity while incarcerated to pursue their religious faiths. Under the same provision, the U.S. Supreme Court states that visit can be banned if the prison's security is breached. Which Supreme Court case established this principle?
1) Estelle v. Gamble (1976)
2) Cruz v. Beto
3) Wolff v. McDonnell (1974)
4) Holt v. Sarver (1970)