Bonjour Madame Aurélie , Maybe I noticed a minor typo

Question

Bonjour Madame Aurélie,While doing a test named “Conte de fées” I landed up at a mysterious sentence -Le père était àgé et sortirait rarement de son lit, alors sa fille devait s’occuper du jardin et des animaux.Here I would like to ask you why a dû was marked incorrect although the English translation specifies ‘so his daughter had to take care of the garden .....’ . I read your lesson which states that one uses Passé Composé for an obligation that was very well met. And here too is the same case.The link to the test -https://french.kwiziq.com/my-languages/french/tests/take/2581800Please help me to figure out the correct option as I am not very clear with this concept.Merci d’avance ! Bonne journée!

Aurélie Drouard · Accepted Answer

Bonjour Varsha !
Here look at the context of the sentence :"Her dad was old and couldn't get out of bed" is a situation that is lasting in the past, a recurring situation. And so is the fact that his daughter had to take care of everything. She didn't just do it once, on a specific day for example, but it was a recurring occurrence, hence the use of Imparfait here :)
I hope that's helpful!Bonne journée !

Shrey Rustagi · Answer

Merci Madame Aurélie ! The way you provided the reasoning with the help of an English translation was an excellent approach for a learner like me .

Merci de passer votre temps précieux à répondre à ma question.