Option 1: Jena - This option is incorrect as Jena is not a commonly known name or title associated with Vardhman Mahavir. There is no significant historical or religious reference to support this option as his alternative name.

Option 2: Great teacher - While Vardhman Mahavir was indeed considered a great teacher, this is not an alternative name for him. He is commonly referred to as Mahavir or Vardhman Mahavir, rather than "Great Teacher".

Option 3: Great preacher - Similar to option 2, Vardhman Mahavir was known for his teachings and preaching. However, "Great Preacher" is not an alternate name specifically associated with him.

Option 4: Jain - This option is also incorrect as Jain is a religious community and not a name or title for Vardhman Mahavir.

Alert - correct answer should be None of the above. Vardhman Mahavir is also commonly known as Mahavir or Vardhman Mahavir, but none of the options provided in the question are correct alternative names for him.