Pick out the most effective word from the given words to fill in the blank to make the sentence meaningfully complete: These essays are intellectually ______ and represent various levels of complexity.
Q1. Pick out the most effective word from the given words to fill in the blank to make the sentence meaningfully complete: These essays are intellectually ______ and represent various levels of complexity.
Answer: Demanding
Explanation: "Demanding" fits best as essays that are intellectually challenging and represent varying levels of complexity require effort from readers.