In which revision are clause 1 and clause 2 both independent? clause 1: padmi looks frantically for her pen clause 2: her sister calmly writes with it a. padmi looks frantically for her pen as her sister calmly writes with it. b. while padmi looks frantically for her pen, her sister calmly writes with it. c. padmi looks frantically for her pen when her sister calmly writes with it. d. padmi looks frantically for her pen, and her sister calmly writes with it.