To which of the following, the evolution of wild cabbage can be given as an example? 

Since humans created the various veggies from cabbage by selectively breeding for particular traits, this is an example of artificial selection. 

Wild cabbage evolved by artificial selection, which means that people chose the traits they desired and exclusively bred for those traits. 

For instance, they developed cabbage when they needed a lot of leaves. They developed broccoli because they wanted to stop the growth of flowers.