When was the light bulb discovered

1879

Explanation:

First in 1879 and then a year later in 1880 -- and began commercializing incandescent light bulb

room is a really good movie.

the answer is d because for c the actors can't love acting for the other's audience their not even in the same show, it can't be b either because the question is talking about the actors not the audience, and it can't be a because   it's not specific enough