After the K-Pg mass extinction event, mammals were able to survive and proliferate. Which of the following factors contributed to this success the least?(1 point)
A) ability to regulate their body temperature in the face of reduced sunlight and colder temperatures.
B) more oceanic and lake habitat, leading to marine mammal evolution.
C) most mammals being nocturnal, allowing them to see better in the darkened conditions.
D) fewer predators in the absence of dinosaurs.