select all the statements below which are true ratios and proportions compare items with the same labels, ratios anr proportions compare items with different labels, ratios express the relationship between two or more items, ratios express the relationship between only one item.

- Ratios compare items with different labels

- Proportions compare items with the same labels
- Ratios express the relationship between two or more items.

Statements which are true:

- Ratios and proportions compare items with the same labels.
- Ratios express the relationship between two or more items.

To determine which statements are true about ratios and proportions, let's analyze each statement:

1) Ratios and proportions compare items with the same labels.
This statement is partially incorrect. While it is true that ratios and proportions can compare items with the same labels, they can also compare items with different labels.

2) Ratios and proportions compare items with different labels.
This statement is partially correct. Ratios and proportions can indeed compare items with different labels, in addition to comparing items with the same labels.

3) Ratios express the relationship between two or more items.
This statement is true. Ratios are used to express the relationship between two or more quantities or values. It shows how one quantity relates to another.

4) Ratios express the relationship between only one item.
This statement is incorrect. Ratios express the relationship between two or more items, not just one.

Based on the analysis, the true statements are:

- Ratios and proportions compare items with different labels.
- Ratios express the relationship between two or more items.