India's official entry for the 88th Oscar Awards in the feature film category was 'Court', a Marathi-language film directed by Chaitanya Tamhane. So, the correct option is b. court.
The official entry from India for the 88th Oscar Awards in the feature film category was 'Court'. 'Court' is a Marathi-language film directed by Chaitanya Tamhane, and it was chosen to represent India in the Best Foreign Language Film category. Despite being the official entry, it's important to note that not all official entries are nominated for the Oscar Awards, as they must go through a selection process conducted by the Academy of Motion Picture Arts and Sciences.