• Mast cells (A) : These are a type of white blood cell that is part of the immune system. They are found in many tissues, but particularly in areas close to the external environment, such as the skin and mucous membranes. They are found in connective tissues like areolar tissue.

- Inner surface of bronchiole (B) : The bronchioles are small airways in the respiratory tract that lead to the alveoli (tiny air sacs in the lungs). The inner surface of bronchioles is lined with ciliated epithelium. Cilia are small, hair-like structures that help move mucus and trapped particles out of the lungs.

- Blood (C) : This is a specialized type of connective tissue. It has cells (red and white blood cells, and platelets) suspended in a liquid matrix called plasma.

- Tubular parts of nephron (D) : Nephrons are the functional units of the kidney, responsible for filtering blood and creating urine. The tubular parts of the nephron are lined with cuboidal epithelium. This type of epithelial tissue has cells that are roughly as tall as they are wide.

Given this information, the correct match seems to be :

Option B :

A-II, B-I, C-IV, D-III