Answer:
Suspect A
Step-by-step explanation:
Suspect A should be called in for further questioning because the pattern of vascular bundles of plant materials from his/her shoe coincides with the arrangement pattern of vascular bundles in monocot plants.
In monocots, the vascular bundles are scattered within the ground tissues while in dicot, the vascular bundles are arranged in the form of a ring.
Since corn belongs to the monocot family, then its vascular bundles are scattered within the ground tissues. Hence, the suspect whose cross sections of the plant material from his/her shoes indicates the vascular arrangement belonging to a monocot will be called for further questioning.
The correct answer is suspect A.