I think it is C because A is missing commas, B doesn't need them and D doesn't need one.
Answer:
Dear Uncle
Recentley I have been going through some hard time when I have been trying to cook dinner. Since you are a chef can you help me with my cooking. I need new things to cook, I want help, amd I want to eat a good meal. Please and thank you.
Sincerely
Bob.
As Scout gets older, she starts to understand how to cope with Calpurnia better and ends up having a stronger relationship with her.
Answer:
hertz
Explanation:
Usually frequency is measured in the hertz unit, named in honor of the 19th-century German physicist Heinrich Rudolf Hertz. The hertz measurement, abbreviated Hz, is the number of waves that pass by per second. For example, an "A" note on a violin string vibrates at about 440 Hz (440 vibrations per second).
