Gold is used to make jewellery because
lustrous and attractive
Correct option: B
The explanation for the correct option:
Gold being a metal is lustrous and shiny and is very attractive. Due to this reason, it is used in making jewelry.
The explanation for incorrect options:
A. Gold is a metal and hence has the property of being shiny hence it can't be dull.
C. Gold is an unreactive metal and also exists in a free state hence it can't be reactive.
D. Gold is a very expensive gold because its extraction process is extortionate hence it isn't cheap.
Hence, Gold is used to make jewelry because of its shine and luster. So, option B is the correct answer.