Final answer:
In the sentence provided, the proper noun 'Sally's Sweet shop' needs capitalization, and it should be corrected to 'Sally's Sweet Shop' as it is the name of a business.
Step-by-step explanation:
The sentence in question contains a proper noun, 'Sally's Sweet Shop,' which is the name of a business. According to standard capitalization rules, proper nouns should always begin with a capital letter. Therefore, the word 'shop' in 'Sally's Sweet Shop' needs to be capitalized as it is part of the official name of the business. The corrected phrase would be 'Sally's Sweet Shop'.
It is also worth noting that the beginning of sentences, names of places, people, specific objects, and titles are cases where capitalization is commonly applied.