I believe you mean conflict. To answer conflict defines as a disagreement between two parties. To summarise it means a bad thing not good
A historian's blog devoted to Shakespeare's characters
I would say the answer was either b or c. but they are the same.
Answer:
Dear Sandra,
I am writing to let you know that your book, Eleven, has truly impacted me and my family positively. The book has rekindle our spirit to forge ahead. The book provides us with a reflection of our past experiences and understanding of crucial past events and how it has impacted our journey. Thank you for writing such a beautiful and impacting book.