Skeletal Force Transmission!

I am not so sure about this, but I'll give a shot, because nobody has dropped any suggestions yet .

I am between A & E. The annular ligament participates in the proximal radio-ulnar articulation and is responsible for the rotary movements of the RADIUS during pronation & suppination. On the other hand, if I am correct, the interossius ligament is one of the most powerful ligaments in the body and runs almost throughout the full length of radius and ulna. So my final pick would be E.

Of course, there is a possibility that none of the above is correct and that I am hallucinating! Waiting for your reliable answers!

I think its E...

It's E for sure. The interosseous membrane is between the ulna and radius, therefore it is what structurally supports force between them.

This was an old school Kaplan question.

yes E

u're all correct. E for sure. i got it totally wrong actually when i answered it first. looks like ill have to revise my anatomy again and fast!