Final answer:
The objective of Julia's study is to test the effects of a new bone growth supplement on puppies. She would conduct the experiment by dividing the puppies into an experimental group and a control group and monitoring their bone growth over time.
Step-by-step explanation:
The objective of Julia's study at Hearty Pup Pets is to test the effects of a new bone growth supplement on puppies. To conduct the experiment, Julia would select a group of puppies and divide them into two groups: the experimental group and the control group.
The experimental group would receive the new bone growth supplement, while the control group would not. Julia would then monitor the puppies over a period of time and record any differences in bone growth between the two groups.