What is the burden of proof required in a civil court case?
A. Guilt beyond all reproach
B. Guilt by probable affiliation
C. Guilt beyond a reasonable doubt
D. Guilt by a preponderance of the evidence

It is definitely D - guilt by a preponderance of the evidence is the standard used in civil cases. The party with the burden of proof must burden of proof must offer evidence that demonstrates their claims have a greater than 50% chance to be true.

A is not a legal standard. B sounds like Accessory to a crime, which is a legal charge in criminal law. C, The beyond a reasonable doubt standard applies to criminal cases only.