What is particularly ironic about what happens in this story? A Andrea is the first person in her class to spot a whale. B Rafi
doesn't notice Andi's lack of enthusiasm for the whale watch. C The weather is chilly and gray on the day of the whale watch. D Rafi gets terribly seasick on the boat, but Andrea feels fine.
A, C and D are just describing some trivial details of the whale watch that, when it comes down to Irony as such, lack the personal scope necessary for using the literary tecnique, where language is used in a deliberately contrary manner. So it has to B.
The passing on of a strong animals genes will make that group of animals stronger and more able to survive. a weak animals genes will weaken that group of animals and could lead to the animals not being able to survive
