Answer:
c
Explanation:
the sequence has a common difference between consecutive terms, that is
a₂ - a₁ =4x + 3 - (3x + 4) = 4x + 3 - 3x - 4 = x - 1
a₃ - a₂ = 5x + 2 - (4x + 3) = 5x + 2 - 4x - 3 = x - 1
Thus the sequence is arithmetic with common difference d = x - 1