Fill in the blank with the most appropriate word. The moment she ____ her wounded husband, she burst into tears.

will see
sees
has seen
saw

The correct answer is D. saw.

The sentence is in the past tense, so the verb in the blank should also be in the past tense. Of the four options, only saw is in the past tense.

A. will see is in the future tense.
B. sees is in the present tense.
C. has seen is in the present perfect tense.

The sentence is about a specific moment in the past, so the verb in the blank should be in the past tense.