The answer is 14.2
the position of a digit after the decimal point, each successive position to the right having a denominator of an increased power of ten.
The only number after the decimal is 2 so the answer is 14.2 it is already to one decimal place.
if the question was 14.25 to one decimal place for example it would be 14.3 as you’d have to round up.
Hope this helps