The answer is c or a because it definitely doesn’t pass through a vacuum the fastest
Going shopping , going to a party, graduating
All investments involve some degree of risk. In finance, risk refers to the degree of uncertainty and/or potential financial loss inherent in an investment decision. In general, as investment risks rise, investors seek higher returns to compensate themselves for taking such risks.(this was searched)
Think about it. 65 mph means you go 65 miles in one hour, so in 2 hours you go 65×2 miles, in 3 hours you go 65×3 miles, and in 3.5 hours you go 65 × 3.5 miles.
Hope this helped