For each of the items listed, the expected outcomes of an iodine test, which is used to detect the presence of starch, are as follows:
- Spinach: Positive (starch is present)
- Bacon: Negative (starch is absent)
- Mushrooms: Negative (starch is absent)
So the selections are:
- Spinach: Positive
- Bacon: Negative
- Mushrooms: Negative