Final answer:
Increasing toy production from 200 to 300 leads to a decrease in glasses production from 1,100 to 600, so the opportunity cost is 500 glasses.
Step-by-step explanation:
The opportunity cost to Supertown of increasing the production of toys from 200 to 300 is the amount of glasses that will not be produced as a result of allocating more resources to toy production. Based on the provided production possibilities table, increasing toy production from 200 to 300 results in the reduction of glasses production from 1,100 to 600. Therefore, the opportunity cost is 500 glasses (1,100 - 600).