The correct answer is option 'A' - Sophia.

Sophia is the very first humanoid robot. Developed by Hong Kong-based company Hanson Robotics, Sophia was activated on February 14, 2016. She gained worldwide attention for her human-like appearance and advanced artificial intelligence capabilities.

Sophia is designed to resemble a human and has a face that can express emotions through facial expressions, including eye contact, blinking, and mouth movements. She has artificial skin made of a special material called "Frubber," which allows her to have realistic facial movements.

Sophia's AI is powered by a combination of deep learning algorithms, natural language processing, and various other technologies. She can hold conversations, answer questions, and interact with humans through speech recognition and synthesis.

Sophia's development was aimed at creating a robot that could assist and interact with people in various settings, such as healthcare, customer service, and education. She has been programmed to learn from interactions and improve her responses over time.

Some key features and achievements of Sophia include:

1. Public Appearances: Sophia has made numerous public appearances, including interviews, conferences, and events. She has been featured in media outlets worldwide and has become a popular figure in the field of robotics.

2. Citizenship: In 2017, Sophia was granted citizenship by Saudi Arabia, making her the first robot to receive such recognition. This move sparked debates about the rights and responsibilities of AI and robots.

3. Social Interactions: Sophia has demonstrated her ability to engage in social interactions with humans. She can recognize faces, make eye contact, and respond to questions and comments in a conversational manner.

4. Advocacy: Sophia has been an advocate for various causes, including gender equality, sustainable development, and the ethical use of AI. She has participated in discussions and campaigns to raise awareness about these issues.

Overall, Sophia's development represents a significant milestone in the field of robotics and AI. She has paved the way for future advancements in humanoid robotics and has sparked important discussions about the implications and potential of AI in society.