Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions from 15 to 20.

Artificial Intelligence, or AI, means computer can do things that usually need human intelligence. This includes understanding speech, solving problems, and learning from experience.

AI is used in many parts of our lives. For example, when you speak to a virtual assistant like Siri or Alexa, that's AI. Some cars can drive themselves using AI, and online shops can suggest things you might like to buy.

AI is useful, but there are also questions. People worry about jobs, privacy, and how machines make decisions. It's important to use AI in a safe and fair way.

In the future, AI may help doctors find diseases early, help students learn faster, and make life more comfortable. But we must think carefully about how we use it.