The correct option is B Acrobat
The word for the phrase 'An entertainer who performs difficult physical actions' is 'Acrobat'. Option A 'Clown' is a comic entertainer in circus . Option B 'Artist' is a person who creates paintings or drawings as a profession or hobby. Option C 'Magician' is a person who performs magic shows . Thus, options A, B and C are incorrect and the correct option is option D 'Acrobat'.