Final answer:
The Spanish word that best completes the sentence is 'suegra' which means mother-in-law.
Step-by-step explanation:
The Spanish word that best completes the sentence is suegra. Suegra is the word for mother-in-law in Spanish. In the sentence, it is referring to Alma's mother-in-law, who is the mother of Alma's husband. It is important to note that the other options are not correct in this context.
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