Out of the four alternatives, choose the one that best expresses the…

The correct answer is Option (1) → cereal - breakfast food, serial - sequential

• Cereal is a grain such as wheat, rice or oats, and also a breakfast food made from grain (cornflakes, muesli).
  Example: The children eat a bowl of cereal with milk every morning.
• Serial means arranged or happening one after another in order, that is, sequential; as a noun it is a story told in parts. The two words sound the same but differ in spelling and meaning (homophones).
  Example: The forms were checked in serial order.