Alliteration is the repetition of the same sound at the beginning of a group of words. In "summer-weight sportcoats" the "s" sound is repeated. In "polished pine" the "p" sound is repeated.
Allusion is a reference to another published work. Irony is when the opposite of what is said or expected happens. A metaphor is the comparison between two different things without using like or as. None of these other options are valid.
