Structural Organisation in Animals

Sketch (B) shows glandular epithelium (columnar cells specialised for secretion, including unicellular goblet cells); it occurs in the lining of the intestine and its function is secretion. This row is fully correct.
Sketch (A): columnar epithelium lines the stomach and intestine; the tubules of the nephron are lined by cuboidal epithelium, so the location is wrong.
Sketch (C): the structure that attaches skeletal muscles to bones is a tendon (dense regular connective tissue), not cartilage, so the row is wrong.
Sketch (D): smooth muscle is found in the walls of blood vessels, stomach and intestine; the heart is made of cardiac muscle, so the row is wrong.
Hence the correct identification is (B) glandular epithelium, found in the intestine, with the function of secretion.

The sketch is of areolar tissue, a loose connective tissue present beneath the skin, with cells and fibres loosely arranged in a semi-fluid ground substance.
A is a macrophage: a large irregular cell that engulfs foreign particles.
B is a fibroblast: a flattened, spindle-shaped cell with processes that produces and secretes the fibres.
C represents collagen fibres: wavy bundles of fibres running through the matrix.
D is a mast cell: a rounded cell packed with granules that releases histamine and heparin.
So A is macrophage, B is fibroblast, C is collagen fibres and D is mast cell.