Answer:
SA:V (surface area : volume ratio) limits cell size because the more the cell grows, the less space it has for it to grow.
Explanation:
Imagine a classroom. A teacher would want to teach as many kids as they want in that one classroom but they can't because the class wouldn't have enough space. So, they divide the classes into sections to not only teach the students efficiently, but so the students can have enough room to work without be squished :)
