Answer:
Shirley suffers from communication apprehension
Step-by-step explanation:
The answer is that from this scenario, we can conclude that Shirley suffers from communication apprehension because this refers to a fear a person has in regards to the communication with other people and in the statement it says that Shirley asks for repeated clarifications over what she has to say in e-mails or phone calls, she asks Debra to proofread her e-mails and avoids talking to people which shows the fear she has to the communication with people.
The other options are not right because Shirley is really concern about what she writes and she doesn't do it in a superficial way, the situation is not related to Debra putting less effort when working with a group, Shirley is not passing a message through different people before talking to Debra and they don't come from a high-context culture because it seems that they rely on verbal communication.