💡 Detailed Explanation
The correct choice is 'ほとんど' (hotondo - almost / nearly all). When indicating that almost everyone got 100 or that one's score was almost perfect, 'ほとんど' fits. Sentence translation: 'Because today's test was easy, almost all [students] got 100 points' or 'I got almost 100 points.' 'ちっとも' and 'ぜんぜん' are negative-polarity items (not at all). 'だいたい' means roughly/generally, but 'ほとんど100点' (almost 100%) is highly standard.