那成熟期呢为什么不选？

问题如下：

Which industry life cycle stage can be characterized by declining profitability and intense competition?

选项：

A.

Maturity.

B.

Shakeout.

C.

Growth.

解释：

B is correct.

The characteristics of shakeout stage are as follows: slowing growth, intense competition, industry overcapacity, declining profitability, cost cutting and increasing failures.

B是正确的。

本题考察行业生命周期的各个阶段的特征。

震荡衰退期的特点如下：增长减慢，竞争非常激烈，行业产能过剩，盈利能力持续下降，试图降低成本和行业失败者增加。