Final answer:
The normal dental pulp histologically most closely resembles loose connective tissue.
Step-by-step explanation:
The normal dental pulp histologically most closely resembles loose connective tissue. The dental pulp is the soft tissue inside a tooth that contains blood vessels, lymphatic vessels, nerves, and connective tissue. It fills the pulp cavity, which extends from the crown to the root of the tooth. Histologically, loose connective tissue is characterized by cells scattered in a transparent background, which matches the description of cells located in spaces within the dental pulp.