Answer:
C. Livability
Explanation:
We are given that,
'The architect considers many aspects when he designs a house'.
In order to sum up all the considerations, then only point necessary for the house would be 'LIVABILITY'.
Since, in the end, the house is built to make it livable for the people. SO, if the condition for livability is not satisfied, then other aspects would fail to give the satisfied result.
Hence, option C is correct.