CSF is an abbreviation for which bodily fluid?

Cerebrospinal Fluid is the correct answer because it is the clear, colorless liquid that surrounds the brain and spinal cord, providing essential cushioning and protection against injury. This fluid also plays a vital role in maintaining the brain's environment, facilitating nutrient transportation, and removing waste products. The term "cerebrospinal" specifically denotes its relationship to both the brain (cerebro-) and the spinal cord (spinal), which highlights its dual function in protecting and supporting the central nervous system.

The other options mentioned do not accurately represent any recognized bodily fluid. Cardiac Spinal Fluid is not a term used in medical terminology; similarly, Cervical Spinal Fluid implies a specific area without accurately encompassing the entire fluid system. Lastly, Cerebral Synaptic Fluid is not a defined fluid, as synaptic space refers to the junction between neurons rather than a fluid circulating within the central nervous system.