Let's analyze the relationships step-by-step to determine how b is related to e.

Given Information:

1. b and c are siblings.
2. m has two children.
3. m is son of e.
4. e is father-in-law of h.
5. h has only one son.
6. c is not granddaughter of e.

Step-by-step reasoning:

• Since m is the son of e , e is the father of m.
• m has two children, and b and c are siblings, so b and c are likely the two children of m.
• e is the father-in-law of h , which means h is married to e 's child.
• Since m is the son of e , and e is father-in-law of h , h must be married to m 's sibling (because m is son of e , and e 's child married to h is the spouse of h).
• h has only one son.
• c is not granddaughter of e , so c cannot be the daughter of m 's sibling (who is married to h).
• Therefore, c and b are children of m.
• Since m is son of e , b is grandchild of e.

Conclusion:

b is the grandchild of e. If you want, I can also draw a family tree to visualize this!