Reading Comprehension (RC) | Re: The Black Death, a severe epidemic that ravaged fourteenth century Eur

Hi,

In Question 3, why is option A incorrect? As per the passage, Twigg suggests that the rat 'population was insufficiently migratory to have spread plague'. So, if they could have escaped ships, indicating they are more migratory than Twigg believed them to be, they would have probably caused the plague.

Thanks in advance

---