Answer:
1.14 astronomical units
Step-by-step explanation:
distance between Mercury and Mars is 170,030,000 or 1.14
Can't be 1,926 miles that's to close
6,256 is also way to close
10.8 billion light years is way to far because 1 light year is how far light travels in a year and 1 light year is 5,878,600,000,000 miles
1.14 au sounds good because 1 au is the distance from the earth to the sun