Directions: Read the following passage and choose the best answer.
   (Paragraph 1) Toyota’s new robot glides around like R2-D2 from the Star Wars movies. It is devoted to a single task: pickings up.
   (Paragraph 2) HSR is short for “human support robot.” It comes with a single mechanical arm. It can grasp objects of various shapes and sizes and also pick up smaller items with a tiny suction cup.
   (Paragraph 3) It doesn’t have other tricks, except for a computer panel on its head for surfing the Internet. A person can also access the robot from another computer and use it like a camera-phone.
   (Paragraph 4) Kouichi Ikeda is its engineer. He is serious about using it to help around regular homes. First it will be for people with disabilities and then for the elderly in general. Picking up is especially challenging for people with spinal disorders, he said.
   (Paragraph 5) “Although it can only do one simple task of picking up, it’s already making disabled people quite happy. We’re just getting started. But finally we want it to enter people’s homes,” he said.

What does ‘its’ refer to?