Nelda walks from the Big Pine neighborhood to school every morning. Jonah walks from the Stone Creek neighborhood to school every morning. They both leave at the same time, but Nelda always arrives before Jonah. What other information is needed to determine who walks the fastest?

Ok what do you need with

The answer is b. all other properties are crucial.

The correct option is this: the sound waves from the two trombones have slightly different frequencies.from the question given above, we are told that the loudness of the sounds were increasing and decreasing, this is because the frequencies of the two sounds are different. the means that the number of waves that pass a fixed point in a given amount of time differ for both sounds.