The success of birth control programme in controlling population growth is dependant on

The correct option is "acceptability of the above by the people".

To understand why this is the correct choice, let us analyze the factors that determine the success of any public health or population control program:
1. Availability of Methods: Contraceptive methods, including temporary barriers (like condoms, diaphragms, or chemical methods) and permanent surgical methods (such as tubectomy for females and vasectomy for males), are scientific tools designed to prevent unwanted pregnancies.
2. The Human Factor: While medical science can create effective birth control techniques, these techniques cannot control population growth on their own unless they are actively and widely adopted by the public.
3. Social and Cultural Acceptance: The success of a birth control program relies heavily on education, awareness, and overcoming social, cultural, or religious taboos. If the population does not accept or willingly use these methods, the program will fail to achieve its goals regardless of how advanced or available the medical procedures (like tubectomy or vasectomy) are.

Therefore, the ultimate success of a birth control programme is directly dependent on the acceptability of the above by the people.