A hormone acts to stimulate its neighbouring cell to divide. This hormone would best be described as belonging to which category of hormones?

The terminology used is a classical description of the relationship between the hormone source and target tissue. Paracrine refers to the target tissue as a cell in close proximity to the secreting tissue. Autocrine stimulation refers to cell that releases a factor (hormone) which stimulates the cell from which it was released. Endocrine factors are hormones that have an effect at a distal site in the body.