In order to help people to see the performance at the same time, they gave a bro

In order to help people to see the performance at the same time, they gave a _____ broadcast.

A. living B. alive　 C. live　 D. lively

C

从句子成份判断，选项为作定语的形容词；从performance和broadcast判断，应该用表示“现场”意思的live。