Which Would Not Be Considered a Trade-Off

Multiple Choice

Which would not be considered a trade-off?

A) A mustard plant genotype that does well in wet conditions does poorly in arid ones.
B) Genotypes that increase female fitness in stalk-eyed flies decrease male fitness.
C) A population of a beetle lacking genetic variation for heat tolerance cannot evolve in response to climatic change.
D) Nematodes that reproduce early do not live as long as those that reproduce late.
E) Male fireflies that flash more than average have increased mating success and are more likely to be eaten by predators.