Which of the following bacteria is equal to the size of hyphen?

Explanation

The correct answer is Epulopiscium fishelsoni, which is one of the largest known bacteria, reaching lengths up to 0.5 millimeters, approximately the size of a hyphen. This makes it unique among bacteria, which are typically much smaller. Pseudomonas aeruginosa, Escherichia coli, and Streptococcus pneumoniae are all much smaller, generally in the range of 1-2 micrometers in size, and thus do not match the size comparison to a hyphen.