Final answer:
The word 'astounding' aptly fills the blank in the sentence, describing something that causes amazement or wonder. It can relate to visual spectacles, moments of realization, or impressive workmanship that leaves one in awe.
Step-by-step explanation:
The adjective that best completes the sentence "___________- causing amazement or wonder" is astounding. This word describes something so surprising and impressive that it causes great admiration or wonder. A few examples from different contexts can illustrate the use of 'astounding':
- Witnessing the astounding flames from an impactful event can leave onlookers in amazement at the spectacle.
- Seeing someone suddenly comprehend a complex idea can be an astounding moment, as their admiration for the concept is evident.
- The astounding workmanship of historical artifacts, such as those covered in gold and dazzling to the eyes, can defy description with their sheer beauty and intricacy.