Answer:
Transverse.
Step-by-step explanation:
Pronator teres is the muscle situated in the forearm with the pronator quadratus that help in the forearm pronation. This pronation result in the posterior location of the forearms.
This has two attachments the ulnar tuberosity and supracondylar ridge. This pronation result in the movement of the forearm in the transverse planes. The median nerve is innervated in the pronator teres.
Thus, the correct answer is transverse.