According to the Big Bang Theory, the universe is approximately _________ years old. a13,800 b1.38 million c1.38 billion d13.8 billion

Break Down the Problem

1. Identify the options provided regarding the age of the universe.
2. Recognize the correct scientific consensus based on the Big Bang Theory.

Relevant Concepts

1. The Big Bang Theory posits that the universe is approximately 13.8 billion years old.

Analysis and Detail

1. Review each option:
   • a) 13,800: This is a misrepresentation as it does not denote billions.
   • b) 1.38 million: Far too young given current scientific understanding.
   • c) 1.38 billion: Still younger than expected according to theory.
   • d) 13.8 billion: This aligns with the latest astronomical data and research.

Verify and Summarize

1. The most widely accepted age of the universe according to astronomers is 13.8 billion years.
2. The other options do not fit within the acceptable range of scientific estimations.

Final Answer

The universe is approximately 13.8 billion years old. The correct answer is d) 13.8 billion.