Use reasoning to lead to the answer of the following question:
Where might a conductor flail his arms in the air while he faces people?\nOptions:\n- opera\n- lead orchestra\n- subway\n- orchestra\n- choir
 Reasoning process:
User
A conductor flails his arms as he directs a group of instrumentalists while he faces people in an orchestra which is the space in front of the stage in a modern theater. Therefore, the final answer is orchestra.
Assistant