Final answer:
In Spanish, the phrase 'es buena onda' is used to describe someone as cool or nice. The other options do not match the context.
Step-by-step explanation:
In Spanish, if you just met the coolest person and wanted to describe him or her, you would use the phrase 'es buena onda'. This phrase literally translates to 'is good wave' but a more accurate English translation would be 'He or she is cool'. The options 'como crees', 'hijole', and 'mande' do not fit the context of describing someone as cool.
Learn more about Spanish Expressions