The correct answer is D) All of the above. The doctrine of deviation in a marine insurance policy implies the following conditions: 1) That the voyage be pursued over the usual and direct route (option A) 2) That the cargo be discharged from the vessel with customary dispatch (option B) 3) That the voyage be commenced in a reasonable time (option C) Deviating from any of these implied conditions without justification can result in the marine insurance policy being void. Therefore, all three options are correct as they represent the implied conditions under the doctrine of deviation.