Where is the punctuation error in this sentence?

C. 3

Explanation:

There should be a comma after "...Fantastic Toys..."

When writing an address, there should be a comma after the name of the street, and between the city and state.

In this case, it should be:

"...Fantastic Toys, 123 Location 45 South Avenue..."

b. cronkite, a trusted television personality, declared that the war was unwinnable and told the american people that the government had better find a way out

even though it went against everything the news anchors typically stood for, cronkite voiced an opinion and took a stance, telling the us that there was no way they were going to win, the war was going to end in a stalemate. 

harlem's  cotton club boasted the talents of duke ellington. singers such as bessie smith and billie holiday popularized blues and jazz vocals. jelly roll morton and louis armstrong drew huge audiences as white americans as well as african americans caught jazz fever.