Which sentence contains a nonessential adjective clause?

the coach explained the rules that the officials revised in 2010.

the coach who is an expert in the sport explained the revised rules to us.

after explaining the rules to us, the coach released us to the field.

the officials revised the rules, which the coach explained to us before practice.

The answer is After explaining the rules to us, the coach released us to the field

A nonessential adjective clause is seperated by a coma, and is not needed in the sentence, but adds extra detail.

So if you remove "After explaining the rules to us," The sentence still makes sense.

just add on too that

explanation:

each year on march 8, international women’s day is celebrated around the globe. it’s an important opportunity to shine a spotlight on women’s involvement, contributions, and accomplishments on a range of issues from domestic violence to the role of women in the c-suite. the theme this year is “be bold for change”― a dictum that those who know me personally will acknowledge has pretty much been my mantra throughout my career on wall street, in media and most recently, in philanthropy.the empowerment of girls as leaders, who can be emboldened today to become even stronger leaders tomorrow, is an increasingly recognized imperative in our world, and it couldn’t be closer to my heart

the cost of attendance or coa is an approximate budget for the cost of attendance of the whole academic year. in order to calculate this, universities take into consideration many factors like room and board, tuitions and fees, books, transportation and personal expenses such as medicine, laundry, clothing. all these factors combined make up the final sum to the cost of attendance in each university.