The 'Kettuvalloms' of Kerala refers to
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fishermen tribes
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tree-houses
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house-boats
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herbal oils
C
Correct answer
Explanation
Kettuvallams are traditional houseboats of Kerala, used for tourism and transportation in the backwaters. They are made from wooden planks joined with coir ropes and coated with black resin made from cashew kernel oil. The term comes from Malayalam 'kettu' (tying) and 'vallam' (boat), referring to the construction technique without using nails.