To answer the question about which word has a differently pronounced underlined part:

1. **A. tidal** (pronounced with a long "i": /ˈtaɪdəl/)
**B. sight** (pronounced with a long "i": /saɪt/)
**C. describe** (pronounced with a long "i": /dɪsˈkraɪb/)
**D. mineral** (pronounced with a short "i": /ˈmɪnərəl/)
**Answer: D. mineral**

2. **A. call** (pronounced with a short "a": /kɔːl/)
**B. count** (pronounced with a short "ou": /kaʊnt/)
**C. centre** (pronounced with a short "e": /ˈsɛn.tər/)
**D. cable** (pronounced with a long "a": /ˈkeɪ.bəl/)
**Answer: B. count**

3. **A. meat** (pronounced with a long "e": /miːt/)
**B. break** (pronounced with a long "e": /breɪk/)
**C. heat** (pronounced with a long "e": /hiːt/)
**D. late** (pronounced with a long "a": /leɪt/)
**Answer: D. late**

4. **A. cake** (pronounced with a long "a": /keɪk/)
**B. fare** (pronounced with a long "a": /fɛr/)
**C. hate** (pronounced with a long "a": /heɪt/)
**D. late** (pronounced with a long "a": /leɪt/)
**Answer: B. fare**

5. **A. apply** (pronounced with a short "a": /əˈplaɪ/)
**B. simply** (pronounced with a short "i": /ˈsɪm.pli/)
**C. lovely** (pronounced with a short "o": /ˈlʌv.li/)
**D. friendly** (pronounced with a short "e": /ˈfrɛnd.li/)
**Answer: A. apply**

Here are the answers summarized:
1. D
2. B
3. D
4. B
5. A