Explanation:

- The sentence discusses an occurrence in a meeting, suggesting a need for a word reflecting events or happenings.

- Transpired: It's often used to describe something that occurred or happened, especially something becoming known.

- Option 1: Emerged – This means came to light or became known, aligning closely with "transpired."

- Option 2: Exchanged – Refers to giving and receiving, such as exchange of ideas, not closely related to "transpired."

- Option 3: Was spoken – Suggests verbal communication but doesn't encompass the broader idea of what transpired.

- Option 4: Merged – Involves combining two entities, not relevant to describing an event or occurrence in a meeting.