(C) Error: feel | Correction: feels
The subject "It" is third person singular, so the verb must be "feels."
The sentence uses "It" as the subject. With third person singular subjects (he/she/it), present simple verbs take an -s ending. "feel" → "feels" is the required correction. Options A, B, and D are incorrect as "don't," "is," and "lucky" are all grammatically appropriate in context.