START
↓
Question: "Using the right-hand rule for the motor principle, the right thumb points to?"
↓
Is the rule Fleming’s Left-Hand Rule? → NO (Question specifies *Right-Hand Rule*)
↓
Proceed with Right-Hand Rule analysis:
├─ Method 1: Cross Product (Physics)
│ ├─ Index Finger: Direction of Current (I)
│ ├─ Middle Finger: Direction of Magnetic Field (B)
│ └─ Thumb: Direction of Force (F)
│
└─ Method 2: Common Teaching Mnemonic
├─ Thumb: Direction of Current (I)
├─ Fingers: Direction of Magnetic Field (B)
└─ Palm: Direction of Force (F)
↓
Question focuses on Thumb Direction:
├─ Cross Product → Thumb = Force (Not the answer)
└─ Common Teaching → Thumb = Current
↓
Conclusion: Most educational resources prioritize the *Common Teaching Method*.
↓
ANSWER: C. In the direction of the current
↓
END