Answer:Here's how to calculate the commission rate and the correct answer:**1. Calculate the Commission:*** Commission = Total Sales Amount - Amount Received* Commission = Php 123,800 - Php 8,500* Commission = Php 115,300**2. Calculate the Commission Rate:*** Commission Rate = (Commission / Total Sales Amount) * 100%* Commission Rate = (Php 115,300 / Php 123,800) * 100%* Commission Rate = 93%**Answer:** The commission rate of the sales agent is **93%**.