Sensory receptors?? I believe that is the answer but you may have wanted a more in depth explanation, if so, my bad.
It's B, Bowman's capsule !
This statement accurately compares the stolon and mycelium in fungi.
The stolons of two fungi connect to form gametangia, while the mycelium is made up of hyphae.
The movement in phloem is bidirectional, whereas, in xylem cells, it is unidirectional (upward).