“Sagacity” means the quality of being sagacious which means having keen mental discernment and good judgement; wise or shrewd.
Option A is the correct answer because “wisdom “ means the quality of having experience, knowledge, and good judgement, hence it is the correct meaning of the word sagacity.
Option B is incorrect because “love” means is a feeling of deep affection, which is incorrect here.
Option C is incorrect because “maturity” means the state, fact, or period of being mature, fully grown and understanding.
Option D is incorrect because “efficiency” is the property of attaining maximum productivity with minimum efforts, hence it is incorrect as it is not related to sagacity.