The correct option is
A Culm
the meaning of the following terms are:
-Culm: the stem is joined with solid nodes and hollow internodes. Ex- Bamboo.
-Bulb: The stem is reduced and has a disc like structure which is surrounded by numerous fleshy scaly leaves. Many roots arise from the base. The food is stored in fleshy leaves. Ex- Onion and Garlic.
-Runner: When stem grows and spread on the surface of the soil. The roots develop at the lower side and leaves from the upper side of the node. Ex- Oxalis and Doob grass.
-Twiners: When the stem body twines around the support without any special organ of attachment. Ex- Cuscuta.
So, the correct answer is 'Option A- Culm'.