A researcher wants to estimate the average height of trees in a large forest. They randomly select 50 trees and measure their heights. Which of the following changes would most likely lead to a more accurate estimate of the average height of trees in the entire forest?
Measuring the heights of only the tallest 50 trees in the forest.
Measuring the heights of 100 randomly selected trees instead of 50.
Measuring the heights of 50 trees located only in one specific section of the forest.
Measuring the heights of 50 trees that are all of the same species.
