Final answer:
The subject of this question is French, and the student needs to identify incorrect expressions among a list of greetings and phrases.
Step-by-step explanation:
The subject of this question is French. The student is given a list of expressions and is asked to identify the 4 intruders. The expressions include greetings like 'Bonne journée!' (Have a good day!) and 'Au revoir !' (Goodbye!). However, there are incorrect expressions like 'Tu va bien ?' (Are you going well?) and 'Bonne jour!' (Good day!). The student needs to identify these incorrect expressions as the intruders.
Learn more about Identifying incorrect French expressions