Step 1: First convert light years to parsec.

3.04+10^6 * 1 / 3.26

Step 2: We now have the fraction: 3.04+10^6/3.26

Divide – leave out the 10^6 for now. By just looking at fraction we know that it’s <1. This cancels option E.

Step 3: Divide 3.04/3.26 – we get 9.3… Once you have 0.3 as its’ decimal you can stop the division.

Step 4: 10^7 or 10^5? 10^7 isn’t possible as we’re dividing a smaller number with a larger number. The number therefore must become smaller.

Step 5: This leaves out option 10^7 – and therefore we select answer choice A.

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