the excerpt is from an article that roberto read for science class called \using the scientific method to…

the excerpt is from an article that roberto read for science class called \using the scientific method to study tomatoes.\\nthe student performed an experiment to test his hypothesis about sunlight and plant height using two plants. he kept everything the same between two tomato plants except he exposed them to different amounts of sunlight. he also used a third plant as a control group, or a group in which no variables are manipulated to confirm the results.\nroberto critiqued the work. which problem did roberto most likely identify?\no the sample size is too small.\no too many variables are manipulated.\no it is not possible to keep the conditions the same.\no controls should only be used in studies of animals.

the excerpt is from an article that roberto read for science class called \using the scientific method to study tomatoes.\\nthe student performed an experiment to test his hypothesis about sunlight and plant height using two plants. he kept everything the same between two tomato plants except he exposed them to different amounts of sunlight. he also used a third plant as a control group, or a group in which no variables are manipulated to confirm the results.\nroberto critiqued the work. which problem did roberto most likely identify?\no the sample size is too small.\no too many variables are manipulated.\no it is not possible to keep the conditions the same.\no controls should only be used in studies of animals.

Answer

Brief Explanations:

In scientific experiments, a larger sample size is generally better for more reliable results. Here, only two experimental plants and one control plant are used, which may not accurately represent the overall situation. Other options are incorrect as only sunlight is manipulated, it is possible to keep most conditions the same in a simple plant - sunlight experiment, and controls are used in plant studies too.

Answer:

The sample size is too small.