In sheet metal is used for producing fluid tight joints. a - hemming b- seaming c-beading d-roll forming

option B

Explanation:

The correct answer is option B

Seaming is an operation in which the edges are folded over another part to achieve the tight fit.

Seaming is generally used to join other parts together.

So, seaming is generally used for producing fluid-tight joints.

This process is used in the food industry on canned goods, metal roofing, and in the automotive industry.  

how is this a question? in order for me to answer it i have to understand the question

explanation:

answer: copyright is extremely important to authors because it constitutes the ownership of one's original work. having ownership means you can protect your work as intellectual property and control who makes money from it—which is you and those to whom you assign rights.