Final answer:
To resolve the issue of missed calls, Ivan suggests that his great-grandmother Alena needs a caller ID display, thus allowing her to see missed calls when she is away from home.
Step-by-step explanation:
The student's question refers to Ivan figuring out a technological solution to help his great-grandmother Alena know when she has missed phone calls. Ivan suggests that Alena needs something to indicate missed calls. From the given options, the most suitable solution to Alena's problem would be a caller ID display. This feature would allow Alena to see who has called while she was out, enabling her to know if she missed any important calls, such as from Ivan. It is important for people, especially seniors, to keep up with improvements in technology, which can include enhancements that increase consumer options, reduce costs, and provide better-quality service, as well as additional features such as voicemail or privacy managers that help users manage their communication more effectively.