The question requires filling in blanks in a sentence to ensure it makes logical sense. By analyzing the sentence, "Our Constitution is so simple and __________ that it is always possible to meet extraordinary needs by changes in emphasis and arrangement without loss of essential __________," we need words that describe a constitution that is adaptable yet retains its core essence.
Let's evaluate the options:
Among these, "practical ... form" aligns perfectly with the needs of a constitution that is adaptable while maintaining its essential structure.
Fill in the blank with the correct option.
The teacher believed that the student’s sudden lack of interest in class was an ..........., as he had always been enthusiastic and attentive.