Which sentence most accurately describes the daily growth rate of plants?

Options:
Average plant height divided by total number of plants
Sum of individual plant heights divided by number of days
Sum of individual plant heights divided by total number of plants
Average change in plant height divided by number of days

The most accurate description of the daily growth rate of plants among the options provided is:

Average change in plant height divided by number of days

This option captures the concept of growth rate by considering the change in height (which reflects actual growth) and then averaging that change over the total number of days in the observation period, giving an average daily growth rate.