In 10 or more sentences describe te terms of indicator, carbohydrates size, osmosis and diffusion

I don't think anybody's willing to write sentences for you, but look, let me tell you the definitions
Diffusion - when particles go from a higher concentrated area to a lower concentrated area
Osmosis - Water diffusion
Indicator - an event, entity or condition that typically characterises a prescribed environment or situation
Carbohydrates size - Portion serving of saccharides (?)

The correct answer to this question would be c