RESTRICTIVE MODIFIER

Also called a non-parenthetic expression, it is a word, a phrase, or a clause that limits, qualifies, modifies, or describes a word, a phrase, or a clause in a way that is essential to the meaning of the sentence. It is usually introduced by a relative pronoun who or that and cannot be deleted because the meaning of the sentence will be affected.

One of the nearly 500 000 students in the Asia Pacific Region who participated in the Australian Mathematics Competition, Glenn Angelo Galano scored 30 out of 30 points in questions 1-10, 40 out of 40 points in questions 11-20, and 54 out of 80 points in questions 21-30 that earned him 124 out of 150 points and placed him in the top 2 percent in the junior division.