For him stage is just _ means of making a living

有 a means of 的用法，很多大詞典妳會找到。

a means of 的意思 ... 之徑，... 的方法

答案是 B. the; a

For him (the) stage is just (a) means of making a living

對於他舞臺只是壹個謀生的方法

例句：

Restricting vehicular traffic going into central Beijing is a means of reducing air pollution.

For him ______ stage is just _______ means of making a living