Answer:
c) The pitch of the two sirens sounds the same to you
Explanation:
The pitch does not depend on the distance of the object from the observer.
As per the given data
pitch = frequency
Frequency =

=

Hence, the pitch of the two sirens remains the same for the observer.
Answer: D
Explanation: It says that in the paragraph
Answer:
screwdriver should be the awnser is what I think