attentive
US /əˈten.t̬ɪv/
UK /əˈten.t̬ɪv/

1.
paying close attention to something
:
•
The students were very attentive during the lecture.
•
She gave an attentive listen to his problems.
2.
showing care or consideration for others
:
•
He was very attentive to his guests' needs.
•
The nurse was very attentive and made sure I was comfortable.