The thing a blue arrow points at is called a "checkbox", right? What do you call the round elements, the ones that look like bullet points?
The round item you have indicated is a radio button
(on a computer screen) a small circle that you click on in order to make a particular choice. The radio button is then marked with a dot (= a small round mark) to show that it has been selected.
The difference between checkboxes and radio buttons is that you can check more than one checkbox in a group of checkboxes, but select only one radio button in a group of radio buttons.
The name comes from old-fashioned radios and TVs with buttons (round or not) which could be tuned to different radio stations or TV channels. If one button was already pressed in, and you pressed a different one, the first button popped out, and the second one stayed pressed in.
Note: Although British English speakers are familiar with, and use, 'check', many call this symbol
✓ a 'tick', so we may say we 'tick' or 'untick' 'tick boxes'. Interestingly, this UK illustration for an article about 'tickboxes' shows a sheet headed 'checklist':
If you can check more than one, it's a checkbox. If you can only check one, it's a radio button.
I just wanted to note that if we're talking about software terms, the name denotes the functionality, not the appearance. Radio buttons are where you can only select one of a choice of entries. Selecting a different entry unselects your previous choice. If you made them look like squares, and made selecting it put a check in the square, it would still be a radio button because that's the functionality being used.
Similarly, if you made a selection of circles and filling in the circle selected the item and you could select multiple circles, then the functionality still defines it as a checkbox even though you've made it look like radio buttons.
Outside of software:
e.g., in a Scantron form, the term used is usually "bubbles". Fill in the bubble.