Answer:
I will work one extra shift per week, and I will set aside $150 per paycheck to purchase a plane ticket to England.
Explanation:
Given scenario is :
Ethan would like to take a trip to England to visit his grandpa.
1. I will buy a plane ticket to travel to England. - This is an abrupt statement. Traveling does not only consist of plane ticket. It requires a lot of money to travel overseas. One needs to keep some cash with him also. This option cannot be true.
2. I will work one extra shift per week, and I will set aside $150 per paycheck to purchase a plane ticket to England. This seems the correct option as Ethan is planning properly and saving also. He will make a proper budget before traveling.
3. I will travel after I graduate. I will save $100 per paycheck. This is not given when he will graduate. Its an event that has a possibility to occur in future. This is not a valid option.