Answer: G
Explanation:
Since Jody bought envelopes at 9:00 a.m. and left his stamps at the library, it is safe to assume he was after that 9:00 a.m.
The post office opening at noon is not directly relevant to when Jody was at the library.
Therefore, the correct answer would be:
G) between 9:00 a.m. and 12 noon.
Based on the information, this is the most reasonable time frame for Jody to have been at the library.