What was the trick pulled
by the priest?

The priest's trick was to use what little he had to generate a lot.

Explanation:

This question is about "The wonderful pear tree," which tells the story of an old and poor priest who was hungry and begged a peasant who owned a pear cart to give him a pear to eat. The peasant refused to give the priest a pear, so a woman, feeling sorry for the priest's situation, bought him a pear. Grateful, the priest ate the pear and planted the seeds, which generated a large pear tree, allowing the priest to not go hungry anymore.

the red coloration of the lungs looks alarming and adds to the overall message that the flu is threatening apex

the answer would be b.