Concept:
Surrogacy means an arrangement in which a woman carries and gives birth to a child for another person or couple.
Surrogacy may broadly be of two types:
\[
\text{Commercial Surrogacy}
\]
and
\[
\text{Altruistic Surrogacy}
\]
Step 1: Understand commercial surrogacy.
Commercial surrogacy means surrogacy done for money or financial reward beyond permitted medical expenses and insurance.
In this type, the surrogate mother receives commercial payment.
Step 2: Understand altruistic surrogacy.
Altruistic surrogacy means surrogacy without commercial payment.
Only medical expenses and permitted support are allowed.
Step 3: Apply the latest Surrogacy Act.
The latest Surrogacy Act in India bans:
\[
\text{Commercial Surrogacy}
\]
It allows altruistic surrogacy under legal conditions.
Step 4: Final conclusion.
Therefore, the banned form is:
\[
\boxed{\text{Commercial Surrogacy}}
\]
Hence:
\[
\boxed{\text{(C)}}
\]