Study the following information carefully and answer the given questions:

In a family of eight members, Harry is married to Grace. Alan is the only son of Grace, and Becky is Alan's sister. Emma is the wife of Alan. Fred is Emma's son. Chris is the husband of Becky, and David is Chris's son.

How is Chris related to Alan?

Correct Answer: Brother-in-law

Let's break down the family relationships step-by-step to understand how Chris is related to Alan.

Step 1: Analyze Grace and Harry's family
1. Harry is married to Grace.
2. Alan is the only son of Grace. This means Alan is also the son of Harry.
3. Becky is Alan's sister. Since Grace has only one son (Alan), Becky is Grace and Harry's daughter, making Alan and Becky siblings.

Step 2: Analyze Becky and Chris's relationship
1. Chris is the husband of Becky.
2. Since Becky is Alan's sister, her husband Chris becomes Alan's brother-in-law.

Conclusion:
Chris is the husband of Alan's sister (Becky). Therefore, Chris is Alan's Brother-in-law.