Zigzag machines are divided into two categories: A. overlock and serger. B. fully atuomatic and semiautomatic. C. manual and automatic. D. variable speed manual.

Th answer is option B.

Explanation:

A self-loader transmission additionally is known as a grip less manual transmission, auto-manual, computerized manual transmission, trigger move, flappy-paddle outfit move, Manumatic, Tiptronic, Touchshift, Geartronic, Sportronic or oar move gearbox is a car transmission that consolidates manual transmission. A twofold activity gun likewise requires just a trigger draw for each round that is discharged however isn't viewed as self-loader since the manual activity of pulling the trigger is the thing that advances the chamber, not the vitality of the first shot.

The answer is B). fully automatic and semiautomatic