Question

1. identify the three elements in the composite. select all that apply: argon sodium you have selected at least one incorrect element. neon helium you have selected at least one correct element. mercury hydrogen you have selected at least one correct element.

Explanation:

Since no information about the composite is given other than the need to select elements, we rely on the feedback in the image. We know helium is correct. We also know that sodium is incorrect. Since we need three elements and mercury has the feedback of having at least one correct element, it is likely one of the correct ones along with helium. Hydrogen, argon, and neon have no positive - feedback indicating they are correct.

Answer:

helium, mercury (assuming we need to pick two more correct ones based on the given feedback and the requirement of three elements)