Which type of connective tissue is found in the papillary layer of the dermis and contains all of the cell types of connective tissue proper?

That is Loose Areolar connective tissue within the "Papillary" layer, for good capillary blood supply to the basement membrane of the epidermis.
The underlying "Reticular" dermal layer contains much more collagen in its matrix, which is a dense, irregular type of connective tissue.

C. interactions Ecology is one component of Environmental Science that studies organismal interactions. Ecology is a subfield of biology which deals with living things and how they react and interrelate with one another. Organismic interactions has many aspects to consider such as mutualism (two organisms that benefits each other’s behavior), prey-predator (an organism eats the other weaker organisms), parasitism (the opposite of mutualism), and exploitation (decaying). These types of organismic relationships are only within these interactional creatures which either serves to be allies or enemies, for short.