The yong man who draws plans for a construction company is （an architect）. 括号部分提问

What is the young man who draws plans for a construction company ？这里不用who，who指谁，但是你的题目不是问是谁，而是问什么职业，所以用what

Who is the young man who draws plans for a construction company

what does the young man do who draws plans for a construction company ?

an architect 是建筑师 的意思.