Final answer:
The Fornax Dwarf galaxy is closer to Earth at 460,000 light-years away compared to Andromeda I, which is 2,430,000 light-years away.
"The correct option is approximately option A"
Step-by-step explanation:
The distance of the Fornax Dwarf galaxy from Earth is 4.6 x 10⁵ light-years, while Andromeda I is 2.430 x 10⁶ light-years away from Earth.
To determine which galaxy is closer, we need to compare these distances. A light-year is a measurement of the distance that light travels in one year, and it's the standard unit for describing astronomical distances.
Comparing the two distances given in scientific notation, we see that 4.6 x 10⁵ (or 460,000 light-years) is less than 2.430 x 10⁶ (or 2,430,000 light-years). Therefore, Fornax Dwarf galaxy (Option A) is closer to Earth than Andromeda I (Option B).
It is important to note that while Andromeda is the nearest large galaxy to the Milky Way and it is a large spiral galaxy like ours, the question specifically asked about the satellite galaxy Andromeda I, which has a greater distance from Earth than the Fornax Dwarf galaxy.