Enjoras's brief silence, his gaze for the moment cast down, may well be read as confirmation.

Until he lifts his eyes to Combeferre's, and speaks. "Perhaps he could have. But no. He stood up at the end to be shot with me. He chose to die as one of us, with 'Vive la Revolution' on his lips."

Perhaps Grantaire couldn't have escaped. But it doesn't matter; he never thought to try.