Solution:The pattern followed here is :Given Sequence : ca _ pcaa _ caa _ caap _ aap
Now putting the letters in the blank spaces given in the option one by one :
aacp โ c a a p/c a a a/ c a a c/ c a a p/ p a a p
aapp โ c a a p/c a a a/ c a a p/ c a a p/ p a a p
appp โ c a a p/c a a p/ c a a p/ c a a p/ p a a p
But,
appc โ c a a p/c a a p/ c a a p/ c a a p/ c a a p
Here, "appc" follows a particular pattern
Hence, "appc" is the correct answer.