you need to take to make this work?

The specified answer is incorrect, based on the following article:
http://msdn.microsoft.com/en-us/library/bb675163%28v=vs.110%29.aspx

I can see that the following actions are required:
Action#1: Create SQLParameter object
Action#2: Set the SqlDbType of the parameter to… Structured

But nowhere in MSDN samples do I see TypeName being set to Udt. In fact the only member you can set to Udt is SqlDbType, and we already set it to Structured. Udt is for non-table structured data only.

The only other answer that makes sense, but is not actually required is the following:
Action#3: Set the Parameter Direction of the parameter to… Input

And that’s what I’ll be sticking with if I see this shitty question on the exam.

Another related link:
http://msdn.microsoft.com/en-us/library/system.data.sqldbtype%28v=vs.110%29.aspx

SqlDbType.Structured = A special data type for specifying structured data contained in table-valued parameters.

The specified answer is correct, according to the following link:
http://www.anujvarma.com/sqlgeometry-data-type-versus-sqldbtypes/

* Set the SqlDbType to UDT (User Defined Type)
* Set the UdtTypeName to… geometry