A synovial joint is a joint in which is highly common and moveable. They are covered with cartilage and connected by ligaments, lined with a membrane. <span>
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My teacher always taught me the saying "(A)pples on (T)rees, (C)ars in (G)arrages, meaning that A always went with T and C always goes with G
When that applies here, 30 Red, or Adenine legos would go with 30 Thymine legos, which is the color orange
30 reds would go with 30 oranges in this case
I believe b. Let me know if it's wrong