Answer:
The time recorded as 48.9 s (option: d) is least precised as compared to other times.
Step-by-step explanation:
" Precision refers to the closeness of two or more measurements to each other" .
Since, in options a,b and c the time represented is quite close as they are precised to two or more decimal places.
but in option 'd' the time is precised to just one decimal place.
Hence, the time recorded as 48.9 s is least precised.
Hence, option D is the correct answer.
