The example in Rule 10 shows that a good cause for absence could be:

In legal proceedings, a 'good cause' for absence must be a legitimate, verifiable, and often unavoidable reason. Medical proof of illness (B) is a strong example of good cause because it provides objective evidence of an incapacitating condition, making attendance genuinely impossible. This demonstrates a lack of willful default.

• (A) Being out of town is generally not considered good cause unless it was an unforeseen emergency, as travel plans can often be adjusted or communicated in advance.
• (C) Forgetting the date indicates negligence and is never accepted as a good cause for missing a legal obligation.
• (D) Being busy with work is typically not a valid excuse, as legal proceedings take precedence over routine professional commitments.