Question

what might you find in the \beak\ of a doctors mask during this time?

a small crosses to ward off evil spirits
b nothing
c perfumed rags
d an early version of motor oil

Explanation:

This question refers to historical plague doctor masks, which had a "beak" designed to hold aromatic substances like perfumed rags. These were used based on the medieval belief that bad smells (miasma) caused disease, so pleasant scents were thought to protect against infection. Small crosses (a) are not associated with the beak's contents; "nothing" (b) is incorrect as the beak had a purpose; motor oil (d) is anachronistic and unrelated.

Answer:

c. perfumed rags