Which liquid makes bubbles that are the largest? Which liquid makes bubbles that are the prettiest? Which liquid makes bubbles that are the best smelling? Which liquid makes bubbles that are the most interesting?
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Students are studying liquids that make bubbles. Which question could be answered by using a ruler?
Possibilities:
- Which liquid makes bubbles that are the largest?
- Which liquid makes bubbles that are the prettiest?
- Which liquid makes bubbles that are the best smelling?
- Which liquid makes bubbles that are the most interesting?

Which liquid makes bubbles that are the largest?