\( \begin{array}{ll}\text { 1. Which of the following shows a pattern? } & \text { C. S, T,V,D,B,9 } \\ \begin{array}{ll}A, 3,7,3,7,3,7 & D, N, 1, M, 2,3, Z \\ B, 2,4, A, 6, B, C & \end{array}\end{array} \)

To determine which of the given sequences shows a pattern, let's analyze each option: **A. 3, 7, 3, 7, 3, 7** - This sequence alternates between 3 and 7. The pattern is clear: it repeats every two terms. **B. 2, 4, A, 6, B, C** - This sequence does not show a clear numerical or alphabetical pattern. The numbers increase, but the letters do not follow a consistent pattern with the numbers. **C. S, T, V, D, B, 9** - This sequence does not show a clear pattern. The letters and the number do not follow a recognizable order or rule. **D. N, 1, M, 2, 3, Z** - This sequence also does not show a clear pattern. The letters and numbers do not follow a consistent order. Based on the analysis, the only sequence that shows a clear and consistent pattern is: **A. 3, 7, 3, 7, 3, 7** This sequence alternates between 3 and 7.