Your answer is B for your question
I think it’s C but I’m not fully sure so wait for others just to make sure
Theroy or hypothesis thats what i think it is
Mitochondria and chloroplasts likely evolved from engulfed prokaryotes that once lived as independent organisms.
(At some point, a eukaryotic cell engulfed an aerobic prokaryote, which then formed an endosymbiotic relationship with the host eukaryote, gradually developing into a mitochondrion. Eukaryotic cells containing mitochondria then engulfed photosynthetic prokaryotes, which evolved to become specialized chloroplast organelles).
Integument (Skin) has an outer (superficial) epidermis and in inner (deep) dermis. The epidermis is a stratified, squamous epithelium which contains keratin. The dermis is a connective tissue layer, containing an outer loose areolar connective tissue and a deeper dense irregular connective tissue.
