A. In these blogs, I’ve laughed, spit out my coffee,
B. cursed, cried, learned invaluable lessons
C. about work and motherhood, and fell in love
D. with hundreds of people I’ve never met.
E. No error
Option (C)
I've laughed, cried . . . . And fallen in love and not fell in love . . . . - tense error in C. I've spit or
I've spat - spit participle is spit and spat, both are correct.