The correct options are
B To incorporate changes in the constitution for the betterment of the country.
C To make the appropiate changes as per the demand of the time.
As the time advances, there is advancement in many fields like technology, business and day to day work of our fellow citizens. Also the development in different types of field like eradication of poverty, better infrastructure etc. needs new changes in laws which might make these developments fast and efficient. So the provision of amendment is there to ensure the required modifications in the Constitution as per the demand of the time and situations arising in the country.