Explanation:

Social Bubbles are Micro-communities that could contain spread of COVID-19. The idea is based on New Zealand’s model of household “bubbles”, an exclusive social group that is allowed to meet with each other amid the pandemic. As per New Zealand’s model, a bubble is referred to as an individual’s household or the people that one lives with. People are allowed to extend their bubbles slightly to include caregivers or children who might be in shared care. These people don’t need to live in the same household, but must be local. The bubble must however be exclusive and small, the government’s advisory says. In case a member of the bubble develops symptoms, the entire bubble quarantines itself, preventing further spread of the infection. Hence option 1st is correct.