a child who moved from throwing a ball using only an elbow,wrist,and shoulder is showing sings of development?

a.intertask b.spatial
c.joint-plate d.intratask

Based on the information provided, it seems like the child who moved from throwing a ball using only the elbow, wrist, and shoulder is showing signs of development related to motor skills. To determine the specific type of development, we can consider the options given:

a. Intertask: Intertask development refers to the improvement of skills across different tasks or activities. While it is possible that the child's throwing motion could be considered intertask development if the improvement extends to other activities requiring similar motor skills, the given information does not provide enough evidence to conclude this.

b. Spatial: Spatial development, also known as spatial awareness, involves understanding and perceiving objects and their relationships in space. It does not directly relate to the specific motor movement described in the question.

c. Joint-plate: "Joint-plate" is not a known term or concept related to child development. It is not a relevant option in this case.

d. Intratask: Intratask development refers to the improvement of skills within a specific task or activity. Given that the child has progressed from using only the elbow, wrist, and shoulder to throw a ball, it can be inferred that the child is showing signs of intratask development. This means that the child is developing and refining their throwing motion within the specific task of ball-throwing.

Therefore, the correct answer in this scenario would be d. Intratask.