In an experiment in which extraneous variables are present, how does the presence of an extraneous variable affect the results? Group of answer choices It proves that the independent variable is responsible for the differences between conditions It proves that all the conditions of the experiment, except for the independent variable, were held constant It indicates that the results are conclusive, and that the experiment should be repeated using the same design, to allow for the replication of the results It indicates that the results are inconclusive, and that the experiment should be repeated using a different design, without the presence of such variables