Question

what is the doughnut

Answer 1

Explanation:

It's an app for studying you're asking about doubtnet right

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Answer 2

Answer:

It's a ring-shaped object, in particular a vacuum chamber in some types of particle accelerator.

Explanation:

A doughnut or donut is a type of food made from leavened fried dough. It is popular in many countries and is prepared in various forms as a sweet snack that can be homemade or purchased in bakeries, supermarkets, food stalls, and franchised specialty vendors.