I believe the correct response would be D. Are not composed of one or more cells.
This is known as parasitism.
In biology, parasitism is a relationship between species, where one organism, the parasite, lives on or in another organism, the host, causing it some harm, and is adapted structurally to this way of life.
The Calvin cycle take place in the Stroma of the chloroplast. Calvin cycle is a set of chemical reactions that take place in the chloroplasts during photosynthesis. This cycle is light-independent since it takes place after the energy has been captured from sunlight. The process; involves four main steps; carbon fixation, reduction phase, carbohydrate formation, and regeneration phase.
The second one because there is no solute outside for the water to move towards. It will go inside and it may explode
