Choose the answer that best matches the word in italics. Use context clues to determine the meaning of the word, if necessary.

For many millennia, people believed Earth was flat. (1 point)

centuries

The word in italics is "millennia."

To determine the meaning of the word, we can look at the context clues in the sentence. The sentence mentions that people believed Earth was flat for many millennia.

From this, we can deduce that "millennia" refers to a long period of time.

So, the best answer that matches the meaning of "millennia" is: a long time.

To determine the answer, let's first look at the sentence: "For many millennia, people believed Earth was flat." The word in italics is "millennia." To understand its meaning, we can use context clues. "For many millennia" suggests that it refers to a long period of time. Millennia is the plural form of millennium, which is a unit of time equal to 1,000 years. So, based on the context, the word "millennia" means a long period of time.