Which of the following words has a negative connotation?

fresh
rare
soft
tangled

The word from that list with potential negative connotation is Tangled.

As a verb, it implies that something is being complicated or muddled probably with negative intentions. As a noun, it can be synonim for knot or for confusion. It can be used to imply that something is a mess, or a person is lost in a labyrinthic situation.

On the other hand, the other words have positive connotations: fresh can be applied to food that is in optimal condition for consumption or a breeze of fresh air that feels good.

Rare does not have a negative connotation. I.e. when you achieve a goal or do something that is not so common, rare implies that you beat the odds.

realistic fiction depicts life and society in a true to life  manner.

its main characters are dynamic.

they grow and transform with their experiences, making it easier for readers to  relate to them.

this genre primarily focuses on the  daily struggles  of ordinary people, validating their experiences.

hope that ! : )