Final answer:
The statement about the variation in the shapes of dinosaur eggs is true, reflecting the diversity in dinosaurs' physical traits, behaviors, and reproductive strategies.
Step-by-step explanation:
The statement about the shapes of dinosaurs' eggs being varied is indeed true. Dinosaurs exhibited a wide range of physical traits and behaviors, reflected in their reproductive strategies as well.
Evidence such as the discovery of a layer of carbon around dinosaur embryos by a team including Mark Norell indicates that early dinosaur eggs might have had soft shells. Moreover, the diversity of dinosaurs, from the carnivorous bipeds to the herbivorous quadrupeds, and the presence of fossilized eggs with intact embryos, suggest that their eggs also showed variation in shape and structure.
This diversity of egg shapes can also provide insights into the behaviors and environments of different dinosaur species, including where they laid their eggs and how they cared for them. Dinosaurs were a complex and varied group of animals, and it's clear that their reproductive biology was just as diverse as their physiologies and ecologies.