Blubber in whales is, infact an
Adipose tissue
The correct option is A.
Adipocytes are cells that store fat seen in adipose tissue. These are seen beneath the skin, covering the heart, around the blood vessels, kidneys, and yellow bone marrow. It acts as an insulator and shock-absorbing cushion. Blubbers in whales and hump in camels are examples of adipose tissue.
Areolar tissue is the loose connective tissue made up of a sticky matrix with fibers like white collagen and yellow elastic fibers and abundant mucin content. It is otherwise called packaging tissue as it fills the space inside the organs. It also helps in repairing the tissues after an injury.
Dense regular connective tissue mainly consists of tendons ( which join muscles with bone) and ligaments ( which join bones with bones)
Cartilage is a hard but flexible tissue consisting of chondrocytes
Conclusion: Option A is the correct option i.e. Adipose tissue