measured with a metric ruler measured with a spring scale observed with the senses observed with a hand lens
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: The hardness, odor, and taste of an object can all be
Possibilities:
- measured with a metric ruler
- measured with a spring scale
- observed with the senses
- observed with a hand lens

observed with the senses