- A(a)
- B(b)
- C(c)
- D(d)
Step-by-Step Solution
The flag flips from side to side at every step, its cloth on the right, then the left, then the right, while one dot is added to the row each time (1, 2, 3). So the next box has the cloth on the left and 4 dots: (b). (a) forgets to flip the flag, (c) forgets the new dot and (d) turns the flag upside down.
Answer: B) (b)