Correct Answer: material

Solution : The correct choice is the first option.

Explanation :
Spiritual refers to matters related to the spirit or soul, often associated with the divine or immaterial. On the other hand, material pertains to the physical or tangible aspects of existence, forming a clear antonymous relationship with spiritual.

The meanings of the other options are as follows:

• Ethereal : This term refers to something delicate, airy, or otherworldly.

• Divine : This term refers to things related to God or a deity.

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• Sacred : This term refers to something regarded as holy or consecrated.

The correct antonym is material.