What is the purpose of the function simulate_one_HERS_statistic() in the provided code?
a) To shuffle the 'HRT' column in the HERS table and return the shuffled table.
b) To calculate a test statistic based on the 'HRT' column in the HERS table.
c) To create a new column named 'HRT' in the HERS table with shuffled values.
d) To randomly sample the 'HRT' column in the HERS table without replacement.