Adult axolotls are typically aquatic, with gills and underdeveloped limbs, as shown in the image. Under certain conditions, an axolotl can undergo metamorphosis to its terrestrial form, which has completely developed limbs and lungs instead of gills. When an aquatic axolotl is either given food containing the element iodine or is injected with iodine, the axolotl rapidly undergoes metamorphosis to the terrestrial form. Based on this information, what is most likely true about the effect of iodine on axolotls?

Group control group #1 experimental group yes yes yes control group #2 no new drug orange juice bed rest no yes no yes ves which of the following is the best explanation of why a second control group was included in this experiment? o a. to provide the volunteers in the study with something to drink o b. to prove that the common cold cannot be cured c. to confuse anyone who is trying to steal their new drug and sell it as their own invention o d. to researchers conclude that results are related to the new drug and not to the orange juice submit e previous