Multidisciplinary means something involving separate branches of learning and areas of expertise. That means two or more areas of knowledge may have the same subject under analysis, be it because they are complementary areas or simply to obtain a broader and more complete view of what is being studied. For instance, a native tribe of a South American country may be studied under the points of view of different sciences, such as sociology - for their human relationships - and linguistics - for the development of their writing system and the structure of their language.
Answer:
B.
Japan’s deception and successive surprise attacks revealed its aggressive stance in World War II.
Explanation:
In the given excerpt from President Roosevelt's 'Day of Infamy' speech better known as Pearl Harbor Address that was delivered on 7th of December 1941, the key idea that is discussed would be 'Japan's deception(reflected by the phrase 'attack was deliberately planned') and successive surprise attacks(exposed Japanese onslaught and wicked character while attacking Philippine, Wake, Midway, Hong Kong, Malaya, etc.) on United States' naval and military forces disclosed its hostile attitude in Second World War.' This led the United States to enter the war officially when president declared that 'all measures be taken for our defense.' Thus, option B is the correct answer.
Since a participle takes the form: verb + -ing, the only word in this sentence which has such a form is B, 'challenging'. 'Puzzle' is a noun, 'crossword' is an adjective, 'created' is a verb.
