Final answer:
The sentence should retain the word 'leading' to correctly describe the violent shaking that causes shaken baby syndrome, which can lead to severe consequences like brain swelling and retinal hemorrhage. The correct option is B.
Step-by-step explanation:
The correct term to use in the given sentence regarding shaken baby syndrome is 'leading' because it implies causation. Changing 'leading' to 'frightening' or 'foreseeing' does not accurately describe the cause of shaken baby syndrome.
Hence, the choice is B. Leading, indicating the violent shaking that leads to the syndrome, which is characterized by severe medical symptoms like brain swelling and retinal hemorrhage.
This violent act can be triggered by a baby's persistent crying, leading to a caregiver's loss of control and subsequent shaking of the child, potentially causing death or serious injury. Option B. is the correct one.