Why is giving a bill good while selling art products?

Correct answer: To give proof of transaction

Direct answer: Option D, giving proof of the transaction. A bill is a written record showing what was sold, how much it cost, and often the date and seller’s details. Step by step: an art product is sold; the seller writes or prints the sale details; the customer receives the record; both sides can later check the purchase. This improves trust and supports proper, professional business practice. Option A is wrong because a bill should not confuse the customer; it should make information clear. Option B is wrong because a bill records the product instead of hiding it. Option C is wrong because a bill has nothing to do with removing colours. Option D is correct because it gives evidence that the exchange and payment took place. A bill may also help with returns, complaints, accounting and tax records when applicable. Memory cue: bill means a written proof of buying and selling.