Correct Answer: Niche

Solution : The correct choice is the fourth option.

The term habitat means "to inhabit" or "to dwell". In ecology, a habitat is the precise ecological setting or geographical area where a certain species or population of organisms normally resides and flourishes.

The term niche refers to the role or function of an organism or species within an ecosystem.

The meanings of other options are as follows:

• Motion: This term refers to movement or a change in position.
• Clothed: This means to be dressed or covered with clothing.
• Bent: This can mean curved or inclined, and it can also refer to a determined or resolved mindset.

Therefore, the correct synonym for the given word is niche.