To solve this problem, we need to consider the significant figures in the given measurements.$\\$Given:$\\$• $9.99$ m has three significant figures.$\\$• $0.0099$ m has two significant figures.$\\$When performing subtraction, the result should be reported with the same number of decimal places as the measurement with the fewest decimal places.$\\$Let's perform the subtraction:$\\ 9.99$ m$- 0.0099$ m$= 9.9801$ m$\\$Since 9.99 m has two decimal places, the result should be rounded to two decimal places.$\\$Rounding 9.9801 m to two decimal places gives:$\\ 9.98$ m$\\$Therefore, the value of $9.99$ m$- 0.0099$ m$$, taking into account significant figures, is $9.98$ m.$\\$This corresponds to Option 1.