A 3 month baby will have ________
**Core Concept**
The question is related to the physiological development of infants, specifically focusing on the expected physical or behavioral milestones at the age of 3 months. This involves understanding the typical **neurological** and **musculoskeletal** development in infants.
**Why the Correct Answer is Right**
At 3 months of age, babies typically start to exhibit certain physical skills due to their neurological development. One of the key milestones is the ability to hold their heads up while on their stomachs, which is a result of improving **neck muscle strength**. However, without the specific options provided, we can infer that the correct answer should relate to a developmental milestone achievable by most infants at this age, such as **head control** or **smiling** as a social response.
**Why Each Wrong Option is Incorrect**
**Option A:** Without the specific details, we cannot directly address why each option is incorrect, but generally, any option that suggests a milestone clearly beyond the capabilities of a 3-month-old (like sitting up unassisted) would be incorrect.
**Option B:** Similarly, if an option suggests a skill that typically develops earlier or much later than 3 months, it would be incorrect.
**Option C:** Any option not aligned with expected developmental milestones at 3 months would be wrong.
**Option D:** This would be incorrect if it proposes a skill or development not characteristic of this age group.
**Clinical Pearl / High-Yield Fact**
A key point to remember is that by 3 months, infants should have **head control** when placed on their stomachs, indicating good neurological development. This is a critical milestone used in pediatric assessments.
**Correct Answer:** D. Head Control