Does the topic sentence in an essay have to be the first sentence or just near the beginning?

How are the themes from roosevelt's introduction to his address and the excerpt from king's letter similar? click here to read "letter from a birmingham jail."

1. saved aronnax from drowning "an incident" 2. speed of the nautilus man-of-war 3. next to captain nemo conseil 4. electricity vigo bay 5. "a coral tomb" 20,000 leagues 6. the nautilus runs aground nemo's "thunderbolt" 7. episodes are connected by aronnax's quarters 8. captain nemo's "bank" cause 9. distance aronnax traveled on the nautilus "a fine death for a sailor" 10. captain nemo sinks for revenge 50 miles per hour

Choose the correct form of word to complete the sentence. candies-candy's-candys effects on children's teeth is unfortunate.