How are things?
The correct answer to the question "How are things?" is option B, "I'm fine, and you?" In this response, the person is expressing that they are doing well and asking the other person how they are doing.

Explanation:

Understanding the question:
To answer this question correctly, it is important to understand what it is asking. "How are things?" is a common way to inquire about someone's general well-being or to check on the overall state of affairs.

Options analysis:
a) Seven hours: This option is not a suitable response to the question as it does not address the person's well-being or the state of affairs.

b) I'm fine, and you?: This is the correct response to the question. It acknowledges the person's well-being and shows interest in their response.

c) No, I didn't use to: This option does not directly relate to the question and does not provide any information about the person's well-being or the state of affairs.

d) Nothing much: This response does not address the person's well-being or the state of affairs. It suggests that there is no significant news or events to report.

Conclusion:
In conclusion, the correct answer to the question "How are things?" is option B, "I'm fine, and you?" This response acknowledges the person's well-being and shows interest in their response.

This is not correct