a sharp knife a magnifying glass a long piece of string a large jar with air holes in the top
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which tool would be the most helpful in an investigation of the life cycle of a monarch butterfly?
Possibilities:
- a sharp knife
- a magnifying glass
- a long piece of string
- a large jar with air holes in the top

a large jar with air holes in the top