Which sequence best represents increasing complexity?

The following choices are provided;

(1) tissues → cells → organelles → organs

(2) cells → organelles → organs → organism

(3) organelles → cells → tissues → organs

(4) organism → cells → tissues → organelles

The answer is; (3)

Each organelle performs a particular function in cells. Cells are the basic unit of organisms and are complete self-sustaining life entities.  Many cells, differentiated to perform a particular function, make up a tissue (such as bone, muscle tissues). Many tissues come together to make up an organ such as the heart that is composed of cardiac tissue, nerve tissue, blood tissue, etcetera.  

the titanic would be the correct answer