change the food source use more than one squirrel increase the number of students shorten the period of observation
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: A student conducts an experiment to determine the average size of acorn that squirrels eat. The student gave several different sizes of acorns to a squirrel. Which action would most likely improve the results?
Possibilities:
- change the food source
- use more than one squirrel
- increase the number of students
- shorten the period of observation

use more than one squirrel