Answer:
Option 1
Step-by-step explanation:
The complete question is
Genetic variation can aid in the survival of species when the environment changes. Which of the following is the best example of an organism with a genetic variation that could improve survival chances over time?
- an ant that is resistance to pesticide
- a wasp that is infected with parasites
- a cactus that has no spines
- a mouse that has learned to avoid mousetraps
Solution
The survival chances of ants would be highest among all the species mentioned because it has developed a permanent resistance towards the pesticides used for killing insects. However, a mouse that has learned to avoid mousetrap will also have higher chances of survival but learning something cannot be counted as a genetic change.
Cactus without spines is a genetic change but it will not help in survival in fact it will have a negative impact on survival rate of cactus.
Hence, option 1 is correct