When opera began, its primary purpose was to showcase virtuoso instrumentalists.

true
false

False

Explanation:

 The given statement is false as, the opera is mainly created for realizing the people about their own potential and reviving the various classical drama in Greek. Opera first popular in the Europe and it also becoming the most popular theater.

 The main objective of the opera is to incorporate with various elements together like acting, dance scenery and costumes. The opera performance is basically given with the small orchestra or the musical ensembles in the opera house o that it looks more effective.

isaac newton first proposed that earth was not perfectly round. instead, he suggested it was an oblate spheroid—a sphere that is squashed at its poles and swollen at the equator.

the idea of the earth being a flat disc is also inconsistent with the fact that a given lunar eclipse is only visible from half of the earth at a time. the only shape that casts a round shadow no matter which direction it is pointed is a sphere, and the ancient greeks deduced that this must mean the earth is spherical.

hello! : )

i think a judge or jury, as they preside over the court and is the central figure in a trial.

hope this and i hope i answered in time!

good luck!

~ destiny ^_^