Answer:
B). My father, my instructor for the day, picked me up.
Explanation:
Non-restrictive elements are illustrated as the words, clauses(subordinate), or phrases that function to add description or information to the sentence without providing any restriction or limitation to the part it describes/qualifies. These words could easily be withdrawn from the sentence without affecting or altering its meaning.
As per the question, the sentence 2 could be rewritten in order to include a non-restrictive element as displayed through option B as the phrase 'my instructor for the day' modifies the noun 'my father' and serves to add detail to the sentence which however could be withdrawn without altering its meaning('my father picked me up). Since it displays a 'non-restrictive' feature. Thus, option B is the correct answer.
