The best prediction supported by the data in the table is:
The amino acid sequences for flowering plants and cone-producing plants will be the most similar.
This prediction is based on the fact that 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). Generally, organisms that share a more recent common ancestor are expected to have more similar genetic material, including amino acid sequences, than those that diverged earlier.