Developmental milestone attained at 9 months of age is
**Core Concept**
The question tests the understanding of developmental milestones in infants, specifically focusing on the age of 9 months. Developmental milestones are skills or abilities that most children achieve by a certain age, and they are crucial for assessing the normal development of a child.
**Why the Correct Answer is Right**
Although the correct answer choice is missing, typically, by 9 months of age, infants are expected to achieve certain milestones such as sitting up without support, transferring toys from one hand to another, and crawling. These skills indicate the development of gross and fine motor abilities.
**Why Each Wrong Option is Incorrect**
**Option A:** Without the specific details of option A, it's challenging to provide a precise reason for its incorrectness. However, if it suggests a milestone typically achieved earlier or later than 9 months, it would be incorrect.
**Option B:** Similarly, without specifics, if option B refers to a skill not usually mastered by 9 months, such as walking independently, it would be an incorrect choice.
**Option C:** If option C describes a milestone that is either too advanced or too primitive for a 9-month-old, it would not be the correct answer.
**Option D:** Assuming option D is the correct answer, the other options would be incorrect based on the typical developmental timeline.
**Clinical Pearl / High-Yield Fact**
A key point to remember is that developmental milestones can vary slightly among normal children, but significant delays can indicate underlying issues. Recognizing these milestones is crucial for early intervention in cases of developmental delay.
**Correct Answer:** Correct Answer: D. Standing with support