1.A 2. C 3. Not Sure 4. Not Sure 5. Biometrics can help to identify who's at risk for injuries and when they're able to safely return, and they can gauge athlete readiness to determine when they'll be performing at an optimal level.
Tycho Brahe saw a super nova which inspired him to study astronomy.His observations are 5 times more accurate than other astronomers of his time and thus he was given a private island to study about astronomy .He made most accurate naked eye measurements ever.
So he can be said to be the "greatest naked eye astronomer of all time"
