Answer:
D) It provides supporting evidence of the effect playing
music has on developing problem-solving skills.
B is a complete sentence so it isn’t a sentence fragment which is an incomplete sentence
Answer:
C) Without question, our relationship is in trouble, and we need help.
Explanation:
The conjunctive adverbs <em>however</em> and <em>in spite of</em> demonstrate <u>contrast</u> between ideas. Another conjunctive adverb (<em>still</em>) signifies <u>concession</u><em>.</em> Yet the underlined sentence "our relationship is in trouble, and we need help" is not related to the preceding sentences of the paragraph by way of contrast or concession to their ideas.
The phrase without question adds logical emphasis and confirms the obvious fact that the relationship is in trouble. C would be the correct choice.