Final answer:
A bag of sugar and tins of tomatoes should be stored in dry storage, which is the best environment to maintain their quality and shelf life.
Step-by-step explanation:
A bag of sugar and tins of tomatoes should be stored in dry storage. The sugar needs to be kept in a dry environment to prevent it from clumping which can occur if it is exposed to moisture. Tins of tomatoes are also best kept in dry storage, away from any potential contaminants and temperature fluctuations that could affect the cans and the food within. Neither of these items requires refrigeration unless the tomatoes have been opened, in which case they should be transferred to a different container and stored in the cooler. For non-perishable goods such as unopened tins and dry sugar, keeping them well-organized in a pantry or cupboard away from direct heat and light will help maintain their quality and shelf life.