Select the most appropriate option to fill in the blanks.
Nicholas Copernicus is famous for showing the world that the sun is the_________ of the universe in 1543 AD in Poland. He also noticed that some planets appeared to change directions when moving __________ the sky. Earlier astronomers believed in the phenomenon of retrograde motion but Copernicus saw it as _____________ that earth orbited the sun like other planets did.
- Apolar; off; indicate
- Bcentre; across; proof
- Cbipolar; through; evidence
- Dfoundation; inside; display
Solution & Step-by-step Explanation
Let's analyze the blanks based on historical facts and grammatical correctness:
For the first blank, Copernicus proposed the heliocentric system, showing that the Sun is at the centre of the universe (or solar system).
For the second blank, planets move across the sky from our vantage point on Earth.
For the third blank, he saw this visual phenomenon as proof (or evidence) that the Earth itself orbited the sun.
Looking at the options, Option B fits perfectly in all three blanks: "centre", "across", and "proof". Note that in Option C, "bipolar" is scientifically incorrect, and "indicate" in Option A is grammatically incorrect because a noun is required after "saw it as".
For the first blank, Copernicus proposed the heliocentric system, showing that the Sun is at the centre of the universe (or solar system).
For the second blank, planets move across the sky from our vantage point on Earth.
For the third blank, he saw this visual phenomenon as proof (or evidence) that the Earth itself orbited the sun.
Looking at the options, Option B fits perfectly in all three blanks: "centre", "across", and "proof". Note that in Option C, "bipolar" is scientifically incorrect, and "indicate" in Option A is grammatically incorrect because a noun is required after "saw it as".