Dear [Recipient],

I am writing to express my deep interest in becoming a scientist and researching ways to cure cancer. Science has always held a special place in my heart, and I am dedicated to making a meaningful impact in the field of oncology. In order to achieve my goals, I believe it is important to further my education in a relevant subject.

After careful consideration, I have decided to focus on biology as my main area of study. By delving into the intricacies of living organisms and their functions, I hope to gain a better understanding of the mechanisms of cancer and potential treatment options. I am excited to embark on this journey and learn everything I can to contribute to the fight against this devastating disease.

Thank you for considering my passion and determination to make a difference in the world of science.

Sincerely,
[Your Name]