1. Balance
2. Cell division
This is because of the location at which the Peyer's patches develop or are formed. These patches are excessive multiplication of lymphoid nodules within the lower portions of the small intestines.The occurrence of this abnormal cell division may prevent the linings of the intestines to perform its normal functions.
The correct answer is contrast
You put together dissimilar items to create a contrast. The dissimilarity is often so high that the objects are actually complete opposites.