The process skill that is most appropriate for use with older children is:  

A. observation.
B. predicting.
C. measuring.
D. classifying.

Is C the correct answer

What do you mean by "older" children?

school age

School age, meaning 5 - 12?

Measuring is probably the answer, although 11 and 12 year olds are probably ready for classifing.

yes 5-12

That's too broad an age group. You should go back and re-read your text.

To determine the correct answer to the question, we need to analyze the given options and understand the nature of each process skill.

Observation is the process of using our senses to gather information or data. While it is a valuable skill for children of all ages, it may not be the most appropriate choice for older children as they can typically do more complex tasks.

Predicting is the process of making an educated guess or estimation about a future event or outcome. This skill requires a certain level of cognitive development and reasoning ability, which older children usually possess.

Measuring involves using tools and units of measurement to quantify and compare physical quantities. This skill is an essential part of scientific inquiry and experimentation. However, it might not be the most suitable option for older children as measuring skills are typically taught at earlier stages of education.

Classifying is the process of organizing or categorizing objects, ideas, or events based on their common characteristics. This skill involves critical thinking and conceptual understanding. It is generally considered more complex and suitable for older children who have advanced cognitive abilities.

Based on the descriptions and considering the developmental abilities of older children, the most appropriate process skill for use with them would be classifying. Therefore, the correct answer to the question is D. classifying.