The Kinnow mandarin is a major horticultural crop of Punjab known for its:

Sweetness and juiciness
Large size
Seedless nature
Thick skin

The correct answer is (a) Sweetness and juiciness.

Kinnow mandarins are a type of mandarin orange that is grown in Punjab, India. They are known for their sweet and juicy flesh, which is a result of the high sugar content in the fruit. Kinnow mandarins are also a good source of vitamin C and fiber.

The other options are incorrect because:

  • Kinnow mandarins are not particularly large in size.
  • Kinnow mandarins do contain seeds, although the number of seeds is relatively small.
  • Kinnow mandarins have a thin skin, which is easy to peel.