Not 100 percent sure but i believe the set of words that is an adjective clause is D.
That I would like to study in more depth.
It includes the pronoun (that) the verb (study) and the subject (I)
Pros : allows the students and teachers to experiment more , making learning fun and effective .
cons : can be distraction , possible disconnect of social interaction .
To get rid of... so like, purging when you're referring to the eating disorder would be to make yourself throw up or just get rid of the fat. When people say purge it usually has a negative meaning, as well