Which concept is correctly matched with an example from The Beaks of Finches lab? A) Variation - different "beaks" were available. B) Adaptation - different types of foods were available. C) Selecting Agent - an insecticide was used to kill insects on one island. D) Environment - "beaks" with similar qualities were used to gather seeds.

Answer: Option A.

Different beaks were available

Explanation:

Variation is the difference between traits, cells, or characteristics between organisms of any species which is caused by change in genetic information or effect of environmental factors on the expression of genes.

From the question, different beaks were available because there is variation or differences in shapes, sizes and expression.