Final answer:
The claim that "all dinosaurs cared for their young" is a) false because Fossil evidence and comparative biology suggest that some, but not all, species of dinosaurs provided parental care.
Step-by-step explanation:
Dinosaurs, like modern animals, showed a range of parental care behaviors, and while some species likely provided extensive care, others may not have. Evidence from fossil nests suggests that at least some dinosaur species displayed behaviors that could be linked to caring for their young, similar to modern birds and reptiles. Comparative biology also supports this, showing that both the ornithischian and saurischian dinosaurs, akin to their modern-day relatives, birds, and crocodiles, exhibited parental care behaviors.
However, to assert that all dinosaurs exercised parental care would be inaccurate. In the animal kingdom, parental investment can vary significantly, and this would have been true for dinosaurs as well. Factors such as the number of offspring produced, environmental pressures, and the life strategy of the species all impact the level of parental care. Since we cannot generalize this aspect of behavior to all the diverse species of dinosaurs, therefore, the correct answer for the student's question would be Option B: False.