I'm pretty sure it's A, but I'm sorry if I'm wrong.
Despite not providing the picture, there is enough information in the question to understand that the correct answer is alternative A) "At least 500 Million Years"
If the fossilized being lived around 500 million years ago, it means that the rock must be at least about that age.
Alternatives B and C are inconclusive, since the rock might have formed before, and with the information presented it's impossible to tell it's exact age. We can only tell that it's at least 500 million years old because of the fossil of a specimen that lived about 500 million years ago.
In the 1670s, the first significant groups of German immigrants arrived in the British colonies, settling primarily in Pennsylvania, New York, and Virginia. Immigration continued in very large numbers during the 19th century, with eight million arrivals from Germany.
There are several reasons why so few violations of the Sherman Antitrust Act were brought to court, but a major reason was that ironically the courts were often corrupted, making it impossible to for them to want to hear about a corruption case.
On June 6, 1944, our naval base in Pearl Harbor was attacked.
