Tyler was too tired to concentrate on the difficult questions. If you wanted to include the phrase, "after studying all night for the big exam," which would be the most effective expansion of
this sentence?
A)
B)
After studying all night for the big exam, the questions were difficult
because Tyler was too tired.
After studying all night for the big exam, the questions were too difficult
for Tyler to concentrate on
After studying all night for the big exam, Tyler was too tired to concentrate
on the difficult questions.
After studying all night, the difficult questions on the big exam were too
difficult for Tyler to concentrate on
D)

i am a strong (insert gender here) my father and his brother were to, they were killed not by the cold, not by the bears or wolves that roam our streets at night, but by the   bolsheviks. we must stand up and fight communism or we all end up dead, starved dehydrated, enslaved. the time is now we must fight. lenin is a dangerous man but he can be stopped. so my comrades we shall siege there weapons tonight on ward. (rides away with ak(not invented yet) and sword in hand while on bear into snowstorm)

the best sentence that shows the best placement for the modifier "on the ice" is the one which contains it in the end of the sentence or in its beggining followed by a comma, that indicates it works as adverbial, dislocated in the sentence.

the girl promptly slid on her rollers on the ice.

on the ice, the girl promptly slid on her rollers.