Question 1191455
Bᶜ represents the complement of set B, meaning all the elements in the universal set U that are *not* in B.

1. **Identify elements in B:** B = {x, w, v, t, s, r}

2. **Identify elements in U that are NOT in B:**  U = {l, m, n, o, p, q, r, s, t, u, v, w, x, y, z}. The elements not in B are: {l, m, n, o, p, q, u, y, z}

3. **Therefore, Bᶜ = {l, m, n, o, p, q, u, y, z}**