The first half of the flight was fine. But people started to get worried when
A
the pilot said they needed to return to the airport.
B
the plane took off seven hours late.
с
a bad storm made the plane bounce up and down.
D
a baby on the plane began to cry.

c

Explanation:

the examples that saki used to represent satire through situational irony are options two (2) and five (5) inasmuch as the wolf thought that looking for a girl in the bushes could be as easy as hunting little pigs at the park, but it took him so much time to find the girl if it had not been not for a silly mistake. also, bertha would have survived to the wolf's hunt if she had not won those medals for goodness, which at the end they were what got her killed by making noise, so winning medals of goodness was not so good achievement, after all.

they are all talking about chocolate (next time you post a question with "which" post the choices too)