A person becomes tenant only after:

Establishing legal tenancy requires both formal documentation and physical control of the property to create enforceable rights and obligations.

• Correct Option B (Written order + possession): A person legally becomes a tenant only when there is a formal 'Written order' granting the tenancy, which serves as official documentation, and the tenant subsequently takes 'possession' of the land. Both elements are crucial for the legal establishment of tenancy.
• Distractor A (Applying): Merely applying is an expression of interest and does not confer tenancy rights.
• Distractor C (First installment paid): While payment is often a condition, it does not, by itself, establish legal tenancy without the formal order and possession.
• Distractor D (Govt approval): Government approval might be a prerequisite, but the actual act of becoming a tenant is marked by the written order and the taking of possession.