Question

Which of these would form first during the development of a complex multicellular organism, such as an animal? A) cell B) organ C) tissue D) organ system

Answer 1

It should be A) cell since everything is made of cell in a living body.

Answer 2

Answer:

The correct answer will be option-C

Explanation:

All living organism is made up of the structural and functional unit of life called cell.  

The multicellular organisms develop after the cells aggregate together and coordinate to perform a similar function. This next level of the structural organisation is known as the tissue.

The tissue is programmed to perform the same functions in a coordinated manner in the higher organisms.

Thus, Option-C is the correct answer.