Answer:
The correct answer is B.
Step-by-step explanation:
Since semicolons are used to joined to use two complete sentences, the correct answer would be the second one.
Answer B is made up by two complete sentences: the first one with its subject "The question of her decision" and its predicate "is not to be lightly considered"; and the second one presided by the subject "It" and followed by its predicate "(i)s a question for readers to answer."