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Answer:
1. C sieving
2. B handpicking
3. D Use of magnets
4. C Sieving
5. C Sieving
Explanation:
Sieving uses a fine mesh that lets out fine and small particles while the big particles are left at the sieve
Handpicking uses your hands to pick up the large particles
Magnets only attracts metals and doesn't interact with non-metals
(note no.4 may vary since the lack of what the particles are)