IPA: /sɪˈlɛktɪvnəs/
KK: /sɪˈlɛktɪvnəs/
The quality of being careful about what is chosen or accepted; the ability to make distinctions between different options.
Her selectiveness in choosing friends has led her to have a small but close-knit group.
Selectiveness → It is formed from "select" (from Latin "selectus", meaning chosen) and "-ness" (meaning the state or quality of). The word "selectiveness" refers to the quality of being selective or the state of choosing carefully.
Think of the word 'select' which means to 'choose' and remember that 'selectiveness' describes the quality of being careful in choosing.