A 43-year-old woman is diagnosed with thyroid cancer. The oncologist tells the patient that she has the most common form of thyroid cancer and also the least aggressive form, quoting a 10-year survival rate of 97%. What type of thyroid cancer does the patient have?
a) Anaplastic carcinoma
b) Follicular carcinoma
c) Medullary carcinoma
d) Papillary carcinoma