I believe it is none of above. good luck
What is wrong in this sentence is the pronoun their.
As you can see, the pronoun <em>their </em>in this sentence refers to <em>the modern American family. </em>Since the word <em>family </em>is singular, the pronoun which modifies it also has to be singular. So, instead of using the pronoun <em>their, </em>it should be <em></em><u>its.</u>
When a search query is entered into a search engine by a user, all of the pages which are deemed to be relevant are identified from the index and an algorithm is used to hierarchically rank the relevant pages into a set of results. The algorithms used to rank the most relevant results differ for each search engine.
Answer:
2 taking a leap of faith requires courage
Explanation: