From the perspective of a chronobiologist consider:

Does a newborn baby have a circadian clock?

Is a newborn clock different from an adult clock?

Physiologically, how might these differences be explained? Are these differences found across species or only in humans?

Main question was summarized and a the methods used and options considered were
described in sufficient detail, presented results clearly
Data was thoroughly analyzed and was used to support the solution given
Summarized results, discussed possible explanations for results, pointed out errors or inconsistencies, discussed possible implications.