Answer:
Option C. It suggests that she did not care about his death.
Step-by-step explanation:
The fact that Mrs Wright is laughing so soon after the death of her husband, might suggest that she does not care about his passing. While this is not enough evidence to accuse her of killing her husband, it is a plausible option that because she is the murder, she does not have any signs of sadness when thinking about her husband's death.