سوال ۱۵ کنکور ارشد مدیریت کسب‌وکار (MBA) ۱۴۰۴

Choose the word or phrase (1), (2), (3), or (4) that must be changed for the sentence to be correct. The four underlined parts are listed as the options.

This European Union Smart Cities consultant has developed an application for users to discover in which cities best adapt to their expectations and preferences, based on his study of the 140 most attractive cities according to various international studies.