Vibrio cholera is an example of _ type of bacteria.

Explanation

Bacteria are classified according to their shape, which is an essential characteristic for identification. The primary shapes are:Cocci: These are spherical bacteria, and examples include Streptococcus pneumoniae.Bacilli: These are rod-shaped bacteria, with Escherichia coli being a common example.Spirilla: These are spiral-shaped bacteria, such as Treponema pallidum.Vibrio: These are comma-shaped bacteria, and Vibrio cholerae is the organism responsible for cholera.Since the question specifically mentions Vibrio cholerae, the correct answer is Vibrio. The other options are incorrect because they refer to different bacterial shapes that do not apply to Vibrio cholerae.