Choose the most suitable option to replace the highlighted part of the sentence:
I am used to get up early in the morning.

Correct option is C

The correct substitution of the highlighted words is (c) to getting up early.
Explanation: The phrase “be used to” is followed by a noun or gerund (V+ing) because “to” here is a preposition, not part of an infinitive. Therefore, “used to get up” is wrong in this meaning (habit/familiarity). The correct form is used to getting up, which means accustomed to / habituated to doing something.
Grammatical rule used:
· be used to + noun / V-ing (to = preposition)
· Example: She is used to working late at night.
· Information booster / exceptions related to the topic:
· Don’t confuse:
· used to + V1 = past habit (I used to get up early.)
· be used to + V-ing = accustomed/habituated (I am used to getting up early.)