The correct answer is B. a lake, to suggest deeper meaning. The mirror as such is a metaphor of feminine frailty and insecurity; however, when it turns into a lake, it transcends that meaning and evolves into a metaphor of aging, time and change. It doesn't turn into a woman; it just shows the woman's transformation from a young girl into an old woman.
A) Is not always directly stated.
Sometimes the main idea is implied instead of directly stated. You can also get the main idea from the Theme which is stated at the end of the first paragraph.
i hope i helped:)
<span>Words of Anglo-Saxon origin make up 50 % of the total number of words in the English vocabulary.
In short, the answer would be C) 50.
Hope this helps !
Photon</span>