Question

Picture showing four cards in a row with labels 'First animal appears on land', 'First life form appears in the sea', 'First rocks formed on Earth', and 'First flowering plants appear on land'.
A student arranged the four cards sequentially in a row on the basis of the periods when the events occurred. The card showing the earliest event was placed on the extreme left. Which of these cards was placed first in the row?

Answer 1

The answer would be 'First rocks formed on Earth'.