Susan receives her paycheck on a semi-monthly basis, which means she gets paid twice a month, typically on the 15th and the last day of the month. To determine how many paychecks she receives in a year, we need to multiply the number of paychecks she receives each month by the number of months in a year.
Susan receives two paychecks each month, so she receives:
2 paychecks/month x 12 months/year = 24 paychecks per year
Therefore, the answer is option (C) 24.