Correct option is C
The correct antonym of Facilitated is Hindered, which is already used in the sentence.
Facilitated: To make something easier or assist in progress (सुगम बनाना)
Hindered: To create difficulties or delay the progress (बाधा डालना)
Synonyms of Facilitated: aided, helped, promoted.
Antonyms: obstructed, hindered, delayed.
Bout – A short period of intense activity, often related to illness or effort. (दौरा)
Prolific – Producing a large amount of work or results. (उत्पादक)
Hindered – Delayed or made difficult to progress. (बाधित)
Output – The amount of something produced or delivered. (उत्पादन)