Conjunctive adverbs connect one clause to another clause, or one idea to another idea:
Joanne was very good at math; however, she is not good at English.
Descriptive adjectives can be separated with commas in a sentence such as:
Joanne did not want to pet the smelly, wet dog.
So as to not expose the truth. I’m unsure about the background of the question
B. You, because the word you is the first word of the question and the fist letter of the first word at the beginning of a new sentence is capitalized.
