The holy trinity is a Christian belief that God, Jesus, and the Holy Spirit are all one
I believe the answer is: Consumers must be knowledgeable
Competition in the free market encourage producers to keep reducing the cost to make their products so it come up cheaper compared to competitors' products. This improve the chance of them using materials or methods that are dangerous for the consumers. Consumers need to be knowledgeable to distinguish the things hat might endanger us and which things are not.
We have good reason to believe that the health problems that Mrs. Clutter suffers from stem from her family relationships. It seems likely that Mrs. Clutter suffers from post-partum depression. We know this because the birth of her first baby first brought her these feelings, and because they have gotten worse with every subsequent child. Moreover, we also know that she feels overwhelmed by her household duties and wishes her daughter could take over. Therefore, her family relations and her role as a wife seem to account for much of her illness.