Based on the information provided in the table, flowering plants and cone-producing plants share a more recent common ancestor (250 million years ago) compared to flowering plants and green algae (500 million years ago). As a result, the prediction supported by this data is:
The amino acid sequences for flowering plants and cone-producing plants will be the most similar.
This is because organisms that share a more recent common ancestor are likely to have more similar genetic sequences due to less time for mutations to accumulate.