Welcome to Westonci.ca, where you can find answers to all your questions from a community of experienced professionals. Get precise and detailed answers to your questions from a knowledgeable community of experts on our Q&A platform. Explore comprehensive solutions to your questions from knowledgeable professionals across various fields on our platform.

What does the deuterium abundance in the present day universe imply?
a. The amount of dark energy present in the universe.
b. The overall density of normal matter in the universe.
c. The amount of dark matter present in the universe.