The meaning of the phrase "Josh is a bulldozer on the football field" is (d.) metaphorical.
"Josh is a bulldozer" is a metaphor. In other words, the reader should not take this phrase literally since it is not being used with its basic meaning. A metaphor is based on a comparison between two things. In this case, the things that are being compared are Josh and a bulldozer; therefore, the metaphor is used to indicate that a bulldozer is representative of Josh because they share something in common: both of them are powerful.