Which sentence correctly follows punctuation conventions?

Question

(1 point)
However the ice cream has very few ingredients.
Although the creamery uses dairy from many producers; it sources it's eggs from one farm.
The state's most popular ice cream shop is in Boulder Colorado.
Many customers have asked, "Does milk from grass-fed cows taste better?"

Answer 1

The sentence that correctly follows punctuation conventions is:

Many customers have asked, "Does milk from grass-fed cows taste better?"

The other sentences contain punctuation or grammatical errors.