The correct option is A Dark coloured clothes
December is a month of winter in India. During winter, people prefer woolen clothes with darker colours, as dark colours absorb more heat, as well as capture it well for a long time.
Light coloured clothes do the opposite, and hence, are not preferred during colder seasons.
Cotton clothes ease the heat transfer between the body and the surroundings, which is undesirable during winter and rain coats are also not useful in winter, as rain is not prominent in winter.