In the following question, out of the four alternatives, select the alternative which will improve the bracketed part of the sentence. In case no improvement is needed, select "no improvement".
Humongous changes (has occurred) in the last two decades
In the following question, the sentence given with blank to be filled in with an appropriate word. Select the correct alternative out of the four and indicate it by selecting the appropriate option. As the judge enters the courtroom, ______________ calls upon all occupants in the room to stand.