From the given pairs of words, choose the pair which carries the same relation as:

Walk : Stumble

Speak : Stammer

The correct answer is Option (5) → Speak : Stammer

"Stumble" is an interruption, imperfection, or difficulty encountered while performing the action of "Walk." It's an unintentional error that disrupts the smooth execution of walking.  "Stammer" is to speak with involuntary pauses or repetitions of sounds. This is a direct interruption, imperfection, or difficulty in the act of "Speak." It mirrors the "Walk : Stumble" relationship perfectly.

Let's analyze the other options:

• Trot : Race: "Trot" is a specific gait (a moderate, elevated, and rather fast pace of walking or running for a horse or other quadruped). "Race" is a competition of speed. While related to movement, "trot" isn't an imperfection of "race," nor is "race" an imperfection of "trot."

• Look : Ogle: "Ogle" means to stare at in a lecherous or unpleasant way. While "ogle" is a specific kind of looking, it's not an imperfection or error in the act of looking itself, but rather a manner or intent.

• Hear : Ignore: "Ignore" is to deliberately not pay attention to what one hears. This is a choice or response to hearing, not an unintentional imperfection during the act of hearing.