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I have finally mastered new tricks for the half-pipe: the poptart, the barrel roll, and the miller flip.</span>
Answer:
Media portrays models as thin, tall and beautiful. A perfect barbie doll body. Hourglass slim body. Many people would mentally lose their mind for those body that they can't have, leading towards dyslexia or eatting diet pills excessively causing them to eat more and destroy their body. As well as creating depressing on what they don't have and wished they had.
1) The musicians is incorrect, because most adjective clauses start with variations of "who" and "where" and "when" and "why" etc...
2) Gave a stellar performance is incorrect for the same reason
3) Who had been practicing is incorrect because it doesn't elaborate on "practicing"
4) Who had been practicing for months is correct because it tells how long they were practicing, and elaborates on the adjective. (practicing)