Which Statement Does NOT Correctly Describe the Universe at the Era

question 111

Multiple Choice

Which statement does NOT correctly describe the universe at the era of recombination?

• A) The temperature of the universe was about 3 K.
• B) The universe was about 500,000 years old.
• C) The universe became transparent to radiation.
• D) Electrons and protons combined to form neutral hydrogen atoms.

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Definitions:

Transaction Costs

Transaction costs are expenses incurred when buying or selling goods or services, including the costs of searching for information, negotiations, and enforcement of contracts.

Spread

The difference between two values, such as the bid and ask prices in financial markets, or the range in statistical data.

Market Maker

An entity that buys and sells securities from their own inventory, facilitating trading and liquidity in the market.

Transactions

The act of conducting business or commercial dealings, such as buying, selling, or exchanging goods, services, or financial instruments.