Explain what the concept of utilitarianism refers to and provide your opinion on whether you think, with reference to the concept of utilitarianism, the national lockdown has worked for the benefit of humankind in South Africa and whether it may still continue to work in curbing the spread of Coronavirus pandemic.

[Note: 5 marks will be allocated for your explanation on the concept of utilitarianism and 5 marks will be allocated for your opinion].