The correct option is C Accessibility of food through doorstep delivery when people couldn't travel
Food security encompasses availability, affordability, and accessibility of food.
During the pandemic, people were under lockdown and quarantined. However, during this period, many volunteers offered nutritious food for the sick and the poor. By doing so, they ensured the availability of food.
Additionally, the food was offered free or was sold at a very low price so that everyone could buy it. This ensured the affordability of food.
And owing to lockdown, people couldn't go out to get these food packets. So, the doorstep delivery ensured accessibility of food.