Given \( U=\{a, b, c, d, e, f, g, h, i\} \) and \( A=\{b, d, e, h\} \), find \( A^{\prime} \). \( O\{a, c, f, g, i\} \) \( \{a, b, c, f, g, i\} \) \( \{a, c, f\} \) \( \{\} \)

To find \( A^{\prime} \), which represents the complement of the set \( A \) with respect to the universal set \( U \), we need to identify the elements in \( U \) that are not in \( A \). Given: - \( U=\{a, b, c, d, e, f, g, h, i\} \) - \( A=\{b, d, e, h\} \) By removing the elements of \( A \) from \( U \), we get: \( A^{\prime} = U - A = \{a, c, f, g, i\} \). So, the correct answer is \( \{a, c, f, g, i\} \).