Final answer:
Option C) Tokchae explains his situation, silences Songsam, and ends the conversation is the best revision to illustrate effective parallel structure in sentence 23.
Step-by-step explanation:
The best revision to illustrate effective parallel structure in sentence 23 is option C) Tokchae explains his situation, silences Songsam, and ends the conversation. This option maintains parallelism by using the verb form of 'explains' for the first action, 'silences' for the second action, and 'ends' for the third action.