Based on this figure, rank the following luminosity classes in order of increasing size. x Items (6 items) (Drag and drop into the appropriate area) No more items Items in order Smallest WD IV square square disappointed square II square . Largest

## Step 1: Understand the Ranking<br />### The image provides a ranked list of values using Roman numerals and letters, with Rank 1 being the smallest and Rank 6 being the largest. The sequence is as follows:<br />- Rank 1: WD<br />- Rank 2: IV<br />- Rank 3: V<br />- Rank 4: III<br />- Rank 5: II<br />- Rank 6: I<br /><br />## Step 2: Interpret the Roman Numerals and Letters<br />### In this context, "WD" likely stands for "White Dwarf," which is typically smaller than other stellar classifications. The Roman numerals represent luminosity classes, where I is the largest (supergiants) and V is smaller (main-sequence stars). Therefore, the order from smallest to largest based on the given ranks is:<br />1. WD (White Dwarf)<br />2. IV<br />3. V<br />4. III<br />5. II<br />6. I<br /><br />## Step 3: Arrange Luminosity Classes in Order of Increasing Size<br />### Based on the ranking provided, arrange the items from smallest to largest:<br />- Smallest: WD<br />- Largest: I