Fill in the blanks with the correct modal
Take an umbrella. It ______ rain later.

might

The correct modal to fill in the blank is might. The modal might is used to express possibility, and it is the most appropriate modal to use in this context because it does not imply certainty. The weather forecast says that it might rain later, so it is a good idea to take an umbrella just in case.

The other options are incorrect. The modal can is used to express ability, but it does not convey the same sense of possibility as might. The modal should is used to express obligation or necessity, but it is too strong in this context. The modal ought to is similar to should, but it is more formal.