<span>Carry out two or fewer trials.</span><span>
Data’s conclusion is considered valid if the experiment validity is being controlled. With this conclusion validity, our data gathered and presented are considered a reasonable one. It is the most important types of validity. As what is said, by having conclusion validity, your data will be undoubtedly least considered since it is labelled as statistical and well-studied. Once you already mention the word statistics meaning it is studied and surveyed with the most of the human race and includes relationship in your data.</span>
Answer: Mammals and turtles
Explanation:
Mammals and turtles are more closely related to each other as compared to the other organisms.
The have the most recent common ancestors and they share common characters according to the cladogram.
Cladogram is a representation which is used to find out the closely related species. By looking into the cladogram the most recent common ancestors to mammals are reptiles.
Hence, Option A is the correct answer .