Question

Which of these objects would show the greatest parallax?
a. the Sun
b. Mars
c. the Moon
d. Polaris
What is the distance an object would be from Earth if its parallax were one arcsecond?
a. a parsec
b. a light-year
c. an arcminute
d. an angular diameter

Answer 1

The sun's parallax would be 180 degrees, greater than which you can't get.

If an object exhibits a parallax of 1 arc second, then its distance from us
is called one 'parsec'.  That distance is about  3.26 light-years.