Final answer:
The Giver is the character who informs Jonas about the secrets and answers his questions in the novel The Giver.
Step-by-step explanation:
In the novel The Giver, the person who tells Jonas about all the secrets and answers the questions that Jonas asks is The Giver. The Giver is the sole keeper of the community's collective memories and experiences, which includes knowledge of pain, joy, and color—all of which are absent in the community's daily life. As Jonas begins his training to become the Receiver of Memories, The Giver transmits these memories to him, broadening Jonas's understanding of the world and leading him to question the society's ways.