What effect can a false horizon sensory have on a pilot?

A false horizon sensory effect can lead a pilot to misinterpret the actual attitude of the aircraft relative to the true horizon. When pilots are in conditions such as haze, darkness, or overwater, visual references can become skewed, making it difficult to perceive the aircraft's orientation accurately. This phenomenon can create a perception that the aircraft is in level flight when it is actually in a banked turn.

As a result, the pilot may unconsciously adjust controls to try to correct the perceived level position, inadvertently inducing a bank that may lead to further misperception, commonly referred to as "the leans." This is a disorienting sensation where a pilot feels as if they're in a steady state when they're actually not. In essence, instead of seeing a distinct horizon to guide their aircraft's orientation, the pilot's misjudgment can escalate into a more pronounced bank or a rotational attitude, which can affect flight safety.

In contrast, the other options either suggest outcomes that do not directly relate to the effects of a false horizon or indicate incorrect scenarios that do not align with what a false horizon sensory effect typically causes.