Explanation
The blue whale is the world’s largest living mammal, a fact that is widely recognized due to its massive size. This answer is correct because the blue whale’s enormous length of up to 30 metres and weight of over 180 metric tons make it the largest known animal to have ever existed, surpassing even the largest dinosaurs. The QuizMaster of AnsweringExams.Com suggests remembering this fact by associating the blue whale’s length of 30 metres with the number of days in a typical month, making it easier to recall. Other options, such as the elephant, shark, and giraffe, are incorrect because they are significantly smaller than the blue whale, with none of them even coming close to its massive size. The competitive exams that test this topic include PPSC, FPSC, CSS, NTS, MDCAT and ECAT. Practice more at AnsweringExams.Com.
