**Core Concept**
The question is testing the child development milestones, specifically the age range during which a child masters certain psychomotor and cognitive skills. The skills mentioned, such as using a spoon, dressing and undressing with supervision, and understanding gender identity, are all part of the developmental milestones in early childhood.

**Why the Correct Answer is Right**
These skills are typically achieved during the second year of life, around 18-24 months. At this stage, children develop their fine motor skills, hand-eye coordination, and cognitive abilities, allowing them to perform tasks like using utensils, dressing, and understanding basic concepts of identity and gender.

**Why Each Wrong Option is Incorrect**
* **Option A:** This age range is too young, as children typically start developing these skills around 18-24 months, not 9-12 months.
* **Option C:** This age range is too old, as children usually master these skills before entering preschool or kindergarten, not after.
* **Option D:** This age range is not specific enough, as it includes the range of 2-5 years, which is too broad and does not accurately represent the specific age range during which these skills are typically mastered.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that child development milestones can vary significantly among children, and some may reach certain milestones earlier or later than their peers. However, knowing the typical age ranges for these skills can help healthcare professionals identify potential developmental delays or disorders.

**Correct Answer:** 18-24