Question

A star about the size of our sun would be considered

a giant star
a medium-sized star
a large star
a very small star

Answer 1

http://curious.astro.cornell.edu/about-us/49-our-solar-system/the-sun/general-questions/163-how-does-the-sun-compare-to-other-stars-beginner

Answer 2

Our star is quite small compared to other larger stars. Our star has a diameter of nearly 1.4 million km while as the brightest star in the sky, Sirius; has a diameter of 2 million km!

So with that said the category of our star is not Large or Giant or even small but quite an average sized star or medium.