Alexandra just started first year at Laurier and is feeling very lonely, especially when she hears her floormate Brianna laughing loudly with her friends. Alexandra is happy when Brianna invites her to go get their COVID-19 booster shots together. One month later, there is a COVID outbreak on Alexandra's floor. According to Pressman et al.'s (2005) research on loneliness and physical health, which of the following is most likely to happen regarding Alexandra and Brianna's vulnerability to COVID-19?
a) Both Alexandra and Brianna are equally vulnerable to COVID.
b) Brianna is more likely to get COVID than Alexandra because she has more contact with other people.
c) Alexandra will be more vulnerable to COVID than Brianna will be.
d) Brianna will be more vulnerable to COVID than Alexandra will be.