Hilal's tour of the university was wrapping up, and he could scarcely believe all

the information he'd been given. Hilal was now sure that this campus, with its
beautiful buildings and its overall ambience of knowledge and possibility, was the
place for him.

What does ambience mean?

a systematic approach to meeting a goal

a campaign to convince a potential applicant

a mood associated with a particular place

a mood associated with a particular place