Which of the following activities supports the development of scientific inquiry skills in mixed-age groupings? Some children dig in the garden; others pull weeds, plant seeds or keep journals. Some children identify numbers; others count as they take that many jumps. Some children read books about different cultures; others draw clothing designs based on traditional outfits in other cultures. Some children use nontoxic finger paint; others use bristle brushes and acrylics.

All of the activities listed can support the development of scientific inquiry skills in mixed-age groupings, but they do so in different ways.

1. "Some children dig in the garden; others pull weeds, plant seeds or keep journals." This activity supports scientific inquiry by encouraging children to observe and interact with the natural world. They can make hypotheses about what will happen when they plant seeds or pull weeds, and then observe the results. Keeping journals can help them record their observations and reflect on their experiences.

2. "Some children identify numbers; others count as they take that many jumps." This activity supports scientific inquiry by helping children understand the concept of quantity and the relationship between numbers and physical actions. They can make predictions about how many jumps it will take to reach a certain number, and then test their predictions.

3. "Some children read books about different cultures; others draw clothing designs based on traditional outfits in other cultures." This activity supports scientific inquiry by encouraging children to learn about and explore different cultures. They can make hypotheses about why certain clothing designs are used in different cultures, and then research to find out if their hypotheses are correct.

4. "Some children use nontoxic finger paint; others use bristle brushes and acrylics." This activity supports scientific inquiry by allowing children to experiment with different art materials. They can make predictions about what will happen when they mix different colors or use different tools, and then observe the results.

In conclusion, all of these activities can support the development of scientific inquiry skills in mixed-age groupings, as they all involve making observations, forming hypotheses, testing predictions, and reflecting on the results.