The correct answer is A.
OBJ-3.5: When an Android smartphone is connected to the Wi-Fi but shows a question mark (?) next to the Wi-Fi’s radio icon, this indicates that there is a lack of internet connectivity on the current wireless network. It appears that Christina’s smartphone is fully connected to the FreeAirportWiFi, but she has not completed the authentication. These types of public wireless networks often have a captive portal or redirect page with the Acceptable Use Policy that must be accepted before giving the smartphone full connectivity to the internet. Once the acceptance is made to the captive portal, the smartphone is logically connected to the internet, and the question mark will be removed.