The type of selection that makes tall oka trees a better competitor for sunlight over short ones would be directional selection.
It is a kind of natural selection in which individuals with traits at one extreme end of the population are better adapted to the environment.
In this case, tall and short oak trees are at the two extreme ends of the population mean with tall oak trees being able to better competitors for sunlight than the short ones.
The selection is, thus, directional, towards the tall trees rather than the average or the short ones.
More on directional selection can be found here: https://brainly.com/question/12226774