His standard of living has risen since his son joined service.
Explanation:
- Risen: This verb means to go up, increase, or improve, especially in terms of quantity, quality, or status. It is the most appropriate choice to indicate an improvement in his standard of living.
- Increased: This verb also means to become larger, greater, or more, which could work in the sentence, but "risen" is a more common and fitting choice.
- Heightened: This verb means to make something higher or more intense, but it doesn't convey the idea of an overall improvement in standard of living.
- Lifted: This verb means to raise or elevate, but it doesn't accurately describe the improvement in standard of living. "Risen" is the most appropriate choice here.
|
