Explanation

The sentence compares two people's wake-up times. The speaker got up very early, but Jack got up even earlier. Option (d) 'but Jack got up even earlier' is correct because 'earlier' is the comparative form, and 'even' intensifies it. Options (a) and (b) use 'before' which is not the correct comparative in this context; 'before' should be followed by 'than' or used differently. Option (c) 'earlier to me' is ungrammatical. Out of the options, (d) correctly expresses the comparison. Therefore option D is the answer. Cross-checked with Oswaal CDS Yearwise Solved Papers, which rules out (a) and (b) because 'before' is not correct here.