noun
choice; selection item; option
Refers to an item or option that can be chosen, often in menus, forms, or lists.
メニューから選択項目を選んでください。
Please select an option from the menu.
選択肢 is more common for 'choice' in the sense of alternatives or options, while 選択項目 emphasizes an item in a list or menu.
Compound of 選択 (selection) and 項目 (item, entry).