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A
Brake hard in the middle of the curve
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B
Look where you want to go, lean more aggressively, and trust the motorcycle's cornering ability — motorcycles can lean much further than riders expect
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C
Straighten up and run off the road to avoid the curve
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D
Slow as much as safely possible before committing, look through the turn, and try to complete it — running wide or stopping in the middle of a turn is more dangerous than completing it
Why this is the answer
The MSF teaches: SLOW BEFORE (not during) turns. In a turn-entry-too-fast scenario: BEST OUTCOME if you still have options: get your eyes up and looking at the exit, push the handlebars (countersteering) to increase lean angle, trust the bike's capability (most riders reach pavement well before the bike reaches its lean limit), and smooth throttle/brake inputs. WHAT NOT TO DO: brake hard in mid-turn — this reduces lean angle and can cause a low-side crash; straighten up to run off the road — typically causes a higher-speed impact with obstacles off-road than completing the turn. PREVENTION: slow enough BEFORE the turn that you can complete it with margin — the cure is always pre-turn speed management, not heroics after entry.
Source: MSF BRC, Curve Escape Options