To determine which word has a different stress pattern from the others, we need to identify the primary stress in each word. Here are the answers with explanations:

1. A. travel B. flying C. friendly D. pollute
- **D. pollute** (The stress is on the second syllable: po-LLUTE, while the others have the stress on the first syllable: TRAV-el, FLY-ing, FRIEND-ly)

2. A. energy B. bamboo C. teleporter D. transport
- **B. bamboo** (The stress is on the second syllable: bam-BOO, while the others have the stress on the first syllable: EN-er-gy, TEL-e-por-ter, TRANS-port)

3. A. hyperloop B. traffic C. pollute D. worry
- **C. pollute** (The stress is on the second syllable: po-LLUTE, while the others have the stress on the first syllable: HY-per-loop, TRAF-fic, WOR-ry)

4. A. power B. solar C. electric D. driverless
- **C. electric** (The stress is on the second syllable: e-LEC-tric, while the others have the stress on the first syllable: POW-er, SO-lar, DRIV-er-less)

5. A. renewable B. petrol C. planet D. motorbike
- **A. renewable** (The stress is on the second syllable: re-NEW-a-ble, while the others have the stress on the first syllable: PET-rol, PLAN-et, MO-tor-bike)