During World War I, the Russian army was a. small and ill prepared to fight. b. small but well prepared to fight. c. large but ill prepared to fight. d. large and well prepared to fight.

Pretty sure it was large, whether or not it was ill prepared to fight is up for debate. It's been a few years since I revised this, but I'm pretty sure that during the Schleiffen plan the German army relied on the Russians being too slow to defend themselves, however they were quicker than expected? due to this and the sheer size of the army itself I would say d, large and well prepared to fight. They were large enough that even if they were awful in combat they would still be a force to be reckoned with, as they could afford to supply men after men without running out, unlike the German army.