Select the most appropriate idiomatic expression that can substitute the highlighted segment in the given sentence.:
It feels like I made a promise of more than my ability when I promised to complete this worksheet in one day.

Correct option is C

Option (c) is the correct idiom for the sentence.
Bit off more than I could chew: To take on more responsibility than one can manage.
Meaning in context: It feels like I made a promise of more than my ability when I promised to complete this worksheet in one day.
Example: By volunteering to organize the event, she bit off more than she could chew.
Example2: I bit off more than I could chew when I agreed to complete the project alone.