The correct option is B She had understood the importance of its sensory aspects.
"It seemed to her that she had wasted her years acquiring skills which in the end were to be of no use to her: her weather-eye for
a good drying day; her careful ear for judging the gentle singing sound of meat roasting in the oven; her touch for the freshness of meat; and how, by smelling a cake, she could tell if it were baked. These arts, which had taken so long to perfect, fell now into disuse." - this extract from the passage gives the reader a vivid imagery of the senses: visual, auditory, smell, etc. We can conclude from this that Mrs. Deverell realized the importance of the various senses with regard to domestic work because she says that now when she was not doing any of the housework all the "art" [of the senses] she had mastered through household chores were useless now. B is the best answer in the given context.