The sentence that most clearly contains an allusion is:
B. Trying to predict where an electron is in an atom is like playing a game of whack-a-mole.
Explanation:
1. An allusion is a reference to a well-known person, place, event, or work of art. In this sentence, the comparison between predicting the location of an electron in an atom and playing whack-a-mole is an allusion.
2. Whack-a-mole is a popular arcade game where players try to hit moving toy moles with a mallet as they pop up randomly from different holes. By likening the process of predicting electron location to playing whack-a-mole, the sentence creates an indirect reference that enhances the reader's understanding through a familiar context.
This sentence uses the allusion to whack-a-mole to help the reader visualize the unpredictability and challenging nature of determining the location of an electron within an atom.