A.I. Explanation:

Correct answer: reflexes

Explanation: The term 'reflexes' fits grammatically as a plural noun that describes involuntary actions displayed by infants, aligning contextually with the description of newborn behaviors. It is the only option that accurately describes the innate actions mentioned in the sentence.

Meaning: 'Reflexes' are automatic responses to stimuli, such as sucking or grasping, that infants are born with.

Wrong options:

• route: The word 'route' refers to a path or direction and does not relate to the involuntary actions of infants, making it contextually irrelevant.
• emotion: 'Emotion' pertains to feelings and does not describe the physical actions or responses of newborns, thus it does not fit the context.
• flexes: While 'flexes' could refer to bending movements, it is not a commonly used term in this context and does not encompass the range of involuntary actions like 'reflexes' does.

Correct answer: sensitive

Explanation: The word 'sensitive' appropriately describes newborns' heightened awareness and responsiveness to visual stimuli, fitting grammatically and contextually within the sentence structure.

Meaning: 'Sensitive' means having a heightened ability to perceive or respond to stimuli, which is applicable to how newborns react to visual patterns.

Wrong options:

• subjective: 'Subjective' refers to personal opinions or feelings, which does not apply to the objective observation of newborns' visual responses.
• fundamental: 'Fundamental' means basic or essential, but it does not convey the specific responsiveness to visual patterns that 'sensitive' does.
• objective: 'Objective' implies impartiality or lack of bias, which is not relevant in describing the innate reactions of infants to visual stimuli.

Correct answer: discriminate

Explanation: The term 'discriminate' fits grammatically as a verb that indicates the ability to recognize differences, aligning contextually with the developmental milestones of infants in recognizing faces.

Meaning: 'Discriminate' means to recognize or differentiate between things, which in this context refers to infants' ability to tell apart different faces.

Wrong options:

• disown: 'Disown' means to refuse to acknowledge or maintain a relationship with someone, which is not relevant to the context of recognizing faces.
• disorient: 'Disorient' means to confuse or make someone lose their sense of direction, which does not apply to the ability to recognize faces.
• disjoint: 'Disjoint' means to separate or disconnect, which does not fit the context of recognizing or differentiating between faces.

Correct answer: predilection

Explanation: The word 'predilection' fits grammatically as a noun that indicates a preference or liking, which is contextually appropriate when discussing infants' attraction to their mother's voice.

Meaning: 'Predilection' means a preference or special liking for something, in this case, the tones of their mother’s voice.

Wrong options:

• reflection: 'Reflection' refers to the throwing back of light or an image, which does not relate to the concept of preference in this context.
• flection: 'Flection' is a less common term that refers to bending or curvature, which does not apply to the context of preference for sounds.
• selection: 'Selection' implies the act of choosing, but it does not convey the idea of an inherent preference as effectively as 'predilection' does.