Final answer:
The subject of this question is English, as it involves verb tenses and grammar. The student is asking about the correct usage of the present simple tense and the present continuous tense.
Step-by-step explanation:
The subject of this question is English, as it involves the use of verb tenses and grammar. Specifically, it deals with the choice between the present simple tense ('lives') and the present continuous tense ('is living').
In this case, either 'lives' or 'is living' can be used, but they convey slightly different meanings. 'Lives' suggests a more general or habitual action, while 'is living' implies a temporary or ongoing situation.
For example, if the student wants to emphasize that the person's living arrangement is temporary or happening at the present moment, he should use 'is living.' On the other hand, if the focus is on the person's usual living arrangement, he should use 'lives.'
Learn more about verb tenses