charting where birds fly. attracting birds with birdseed. counting the number of birds that fly by. illustrating the different birds that fly by.
I gave my students this multiple choice question: All of these are examples of observation and measurement except

Only one answer is correct among these 4 choices:
- charting where birds fly.
- attracting birds with birdseed.
- counting the number of birds that fly by.
- illustrating the different birds that fly by.

Could you tell me which one is correct?

attracting birds with birdseed.