Which option would ENSURE the best control of quality of construction for the Biswas’?
Explanation:
In options 1, 2 and 3, the house owner lacks control over the quality of construction. However, in option 4 the owner can monitor discrepancies on an everyday basis and take corrective actions, if required, especially given Mrs. Biswas‘ professional experience. Option 4 is equivalent to continuous monitoring which is superior to one time monitoring in other options. Hence, the correct answer is option 4.