Which of the Following Best Describes Fixation

Multiple Choice

Which of the following best describes fixation?

A) A procedure adopted to kill, harden and preserve the tissue for microscopic study by the use of substances like xylene.
B) A procedure adopted to kill, harden and preserve the tissue for microscopic study by the use of substances like mercuric chloride.
C) The procedure in which the ionic materials are removed from the tissue.
D) The process of removing intracellular and extracellular H₂O.