For the given problem regarding the shipment of glassware, here are the correct selections for Part A and Part B:
Part A:
A: Find what percent 28 is of 700 using the equation 28/700 = x/100.
Part B:
B: 4%
This means that to find the proportion of broken items, you calculate what percentage 28 broken items is of the total 700 items, which equates to 4%.