Explanation

We are given:

• PQS, QRT, RSU, STV, and need to find the next term in the sequence.

The pattern follows the sequence of consecutive letters:

• First letters: P, Q, R, S, T (increasing by 1)
• Second letters: Q, R, S, T, U (increasing by 1)
• Third letters: S, T, U, V (increasing by 1)

The next set of letters should be T, U, W.

(A) TUW