Your ASP. NET page contains a page-level variable of Customer type. You want to preserve the value of this variable across page postbacks, but you do not need this variable in any other page in the application. Which of the following state-management techniques is the best way to achieve this?
a. Query strings
b. Cookies
c. ViewState
d. Session

Option c is the correct answer for the above question.

Explanation:

View states are a mechanism that is used in c# programming language, It is used on only one page on which the user or programmer is working currently. It does not hold the records when the control goes to the other page.

The above question also wants which is described above. Hence option c is the correct answer while the other is not because:-

solution:

bookmark is a word, symbol, image, or other object that links you to another element in another location.

bookmark is a saved shortcut that directs your browser to a specific webpage. it stores the title, url, and favicon of the corresponding page. saving bookmarks allows you to easily access your favorite locations on the web.

it works in all modern web browsers include bookmark features. bookmarks are called favorites or internet shortcuts in internet explorer, and by virtue of that browser's large market share, these terms have been synonymous with bookmark since the first browser war.