Please help and will giv brainliest to correct answer

Which action describes an aspect of technological design?

In my email i got a message it says a quick message and in message details on who its from its says nicole and under nicole is [email protected] -

Which demographic challenge is europe currently experiencing? a. an aging and decreasing population b. a baby boomc. an unequal distribution between males and females d. a large group of teenagers moving through the school system(i chose a but i'm unsure)