Question

but studies have found a link between both types of diabetes and this mysterious shoulder condition, which occurs in three stages: weeks of inexplicable shoulder pain, followed by months of \frozen\ stiffness and restricted motion, and then finally a \thawing\ stage in which motion gradually returns. source: new york times in this sentence, inexplicable means: being in focus or brought into focus incapable of being explained or accounted for in a set manner marked by extreme rigidity characterized by great force or energy

Explanation:

The prefix "in -" often means "not", and "explicable" means able to be explained. So "inexplicable" means not able to be explained.

Answer:

B. incapable of being explained or accounted for