Final answer:
The damage falloff for Sharpshooter (Twinshot) at Tier 2 is 45%.
Step-by-step explanation:
The damage falloff for Sharpshooter (Twinshot) at Tier 2 is 45%. This means that Twinshot's ranged attacks and abilities will deal 45% less damage when at Tier 2. For example, if a regular attack would normally deal 100 damage, it would only deal 55 damage at Tier 2. The original question provided the correct answer, which is option 2) 45.