In algae and plants, photosynthesis happens in the
a. vacuoles b. mitochondria c. chloroplasts d. chromosomes.

C. Chloroplast

Chloroplast is  chloroplast filled organelle that is found in plant cells and some green algae. Chloroplast is a kind of plastid- a round oval  disk-shaped body, that is involved in  the synthesis and storage of food stuffs.

Chloroplasts are distinguished from other types of plastids by their green color which results from the presence of two pigments namely chlorophyll A and chlorophyll B. 

A function of these pigments is to absorb light  energy in plants  for powering the process of photosynthesis.

label a cell membrane

label b cytoplasm

label c ribosomes

label d dna

the membrane forms the outside of the cell

cytoplasm is the liquid within

ribosomes are the components within that distribute rna

the dna is the genetic make-up

condensation. good luck!