We are looking at :
b) 12 simple leaves arrayed along a stem.
Step-by-step explanation:
- A simple leaf bears bears a continuous lamina and an axillary bud at the axil of the leaf i.e. the point where the petiole joins the stem.
- A compond leaf is divided in small leaf like structure called leaflet. Each leaflet has a petiole but lacks the axillary bud.
- In the given observation each small leaf like structure bears an axillary bud at the base. Thus we can say that these are small simple leaves arranged along a stem.