The following sentence has been divided into parts. One of them may contain an error.
Select the part that contains the error from the given options. If you don’t find any error, mark ‘No error’ as your answer.

Most of the families in / my research rely at phone calls / for almost all of their communication.

A

for almost all of their communication

B

No error

C

Most of the families in

D

my research rely at phone calls