Final answer:
Wing tip vortices of minimum strength would be developed by an aircraft flying at a high speed because the condition minimizes the pressure differential across the wing, which reduces the strength of the vortices.
Step-by-step explanation:
The question pertains to the conditions under which an aircraft would develop wing tip vortices of minimum strength. According to the principles of lift, as described by Bernoulli's principle and Newton's third law, we know that wing tip vortices are generated as a by-product of the high pressure on the lower wing surface interacting with the low pressure on the upper surface, which leads to the air rolling from beneath the wing to above it around the wing tip, creating these vortices.
Wing tip vortices are affected by several factors like speed, wing span, and configuration of the aircraft. Option C) Flying at a high speed will result in minimized strength of wing tip vortices because the increased airspeed leads to a proportional decrease in angle of attack for the same amount of lift, reducing the pressure differential across the wing and thus the strength of vortices. Options A), B), D), and E) do not directly correspond to the condition for minimum vortex strength as effectively as high airspeed does.