What is the degree of comparison of the underlined adjective in this sentence? mount everest is the _tallest_ mountain in the world

There are three degree of comparison: POSITIVE, COMPARATIVE and SUPERLATIVE. In this example the adjective “tall” is in the superlative form. A superlative adjectives describe a noun as having a particular quality that nobody else in a specific group or class has it. A superlative adjective is formed by adding –est.

allusion   is the right answer

glitch or non-saved account.

explanation:

i'm not personally a mobile user but one reason could be that it is either a glitch where it doesn't automatically log you in, or you have it so cant save your log-in information. i suggest you use the mobile app instead of using your web browser!