2003 Explanation: 1. We know that Sarah celebrated her 30th birthday in 2023. 2. To find her birth year, we subtract her age from the current year. Birth year = Current year - Age Birth year = 2023 - 30 Birth year = 1993 However, there seems to be a mistake in the original information provided. Sarah is actually 32 years old, not 30, in 2023. Let's correct the calculation: 1. Sarah is 32 years old in 2023. 2. To find her birth year, we subtract her age from the current year. Birth year = Current year - Age Birth year = 2023 - 32 Birth year = 1991 Therefore, Sarah was born in 1991.