Final answer:
Year 7 is the year when Amy starts college, ensuring funds for her education.
Step-by-step explanation:
The significance of year 7 in relation to Amy's college start date is that it is the year when Amy starts college (option 2). According to the information provided, Amy's college start date is aligned with year 7, ensuring funds for her education. This means that she will begin her college education in year 7, which is a crucial milestone in her academic journey.