Final answer:
The correct answer is 'A) lonely', which fits with the song or poem's theme of isolation and the struggle to maintain relationships while working remotely or being physically apart.
Step-by-step explanation:
The excerpt in the question seems to be from a song or a poem illustrating the struggles of maintaining relationships and working remotely, which is a particularly relevant theme given the increased incidence of home-office settings. The line that needs to be completed most fittingly is 'Sometimes it's lonely (Oh oh)'.
Being alone and handling relationships over the phone can indeed feel lonely, and the context suggests a sentiment of isolation. This loneliness is often felt when one is separated from their significant other due to work or other circumstances. The excerpts provided also suggest that the feeling of loneliness can be compounded by the demands of maintaining a work-life balance and the emotional strain it may place on individuals.
Therefore, the correct answer to fill in the blank would be 'A) lonely', aligning with the overall theme of solitude presented in the excerpts.