They acted upon his advices.
They acted following his advices.
They acted according to his advice.
They acted in accordance to his advice.
ব্যাখ্যা: Advice হলো uncountable noun সুতরাং এর plural form নেই। সুতরাং সঠিক বাক্য They acted according to his advice In accordance to-এর স্থলে in accordance with হলে phraseটি সঠিক হয় অর্থাৎ এ অপশন এর উত্তরটি সঠিক হতো।