Which of the following modifications of a stem provides storage?

A. spine

B. twiner

C. corm

The modification of a stem that provides storage is C. the corm. A corm is this small organ found in the stem of a plant that provides storage of resources for the plant to survive during harsh winter times or during hot summer days. Spine is what keeps the plant upright, whereas a twiner is a type of a plant that is also known as vine, as it is a climbing plant.