The correct answer is B. Many people think that self-esteem is the most important gift a parent can give a child; however, the truth is that self-esteem can't be given, because it is something that individuals must achieve for themselves.
Explanation:
Transitions are words or even phrases use to connect two ideas or sections in a texts and words or phrases that show in which way these ideas or phrases are connected, because of this transition can show elements are being compared, information is being added, different elements are being summarized or that two elements are being contrasted.
In the passage there are two main ideas the first one is "Many people think that self-esteem is the most important gift a parent can give a child" and the second one is "the truth is that self-esteem can't be given, because it is something that individuals must achieve for themselves" considering these ideas are connected because they both deal with self-esteem but express ideas that are opposite because one of them states self-esteem can be given, but the other states it can only be achieved by individuals, a transition that expresses contrast should be introduced such as but, instead or however. Considering this as option B. uses one of this that is "however" to connect both ideas option B. is the passage that uses transitions effectively as it shows the contrast between both ideas.