Fluids under pressure tend to follow the line of what?

Fluids under pressure tend to follow the line of what?

• A. Equal resistance
• B. Varying resistance
• C. Least resistance
• D. Highest resistance

Answer: (C)

Fluids under pressure follow the path of least resistance. When a pressure difference drives flow, each possible route has some hydraulic opposition from friction, bends, changes in diameter, and other losses. The flow through a path is inversely related to this opposition, so the route offering the smallest resistance carries the most flow. In practice, this means the fluid naturally selects the easiest path for movement.

That’s why the best choice is the one describing the least resistance. The other ideas don’t capture this bias: equal resistance would require perfectly symmetric conditions, varying resistance describes a general case without pointing to a preferred path, and highest resistance would slow or block flow rather than guide it.