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?

The correct answer is Brother-in-law.

Let's break down the family relationships step-by-step based on the given information:

1. Harry and Grace: Harry is married to Grace. They form a couple.

2. Alan and Becky: Alan is the only son of Grace, and Becky is Alan's sister. This means Alan and Becky are siblings, both being children of Harry and Grace.

3. Chris and Becky: Chris is the husband of Becky.

4. Relation between Chris and Alan: Since Chris is married to Alan's sister (Becky), Chris is the husband of Alan's sister.

Therefore, Chris is Alan's Brother-in-law.