Which of the following root modification store food?

All of these

The correct answer is Option (4) – All of these

The tuberous roots are the roots that are enlarged and fleshy roots modified as a storage organ with both shoots and roots. The shoots are produced at one end and the roots are produced at the other. e.g., Dahlia, Sweet potato, etc.

-The napiform root is the root which is much swollen at the base, so as to become broader than long, like that of the turnip." These are the roots that are round at the top and tapering sharply below.

-A conical root is a type of root tuber that is conical in shape,i.e.the roots are swollen at the top part and are tapering towards the tip of the root. e.g. carrot.