The prefix 'dis' means apart, away; that is to move away from something while the prefix 'sur' means over, above.
To dismount means to get off something or to remove a thing from its support. For example: The king dismounted the horse majestically.
To surmount means to overcome a difficulty or an obstacle. For example:
All the political differences between the two countries were surmounted.
1A
2 would go with something else, not any of these
3B
4D
5 would go with something else, not any of these
Key words: sick, smothered(?), covered(?), nasty, green, detest
Author’s tone: negative
Answer:
you need to ask this again but with more detail