Hello Roxy,
In this context 'based on' is correct, we would use 'based in' to talk about the place you work from.
Best wishes
Bob
PS Your question should be 'Which one is correct?'!
14 september 2016
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Based on is correct, Based in means residence in.
Warm regards,
Qasem
14 september 2016
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Heb je je antwoorden nog steeds niet gevonden?
Schrijf je vragen op en laat de moedertaalsprekers je helpen!