Final answer:
The plural form of 'la merced' in Spanish is 'las mercedes'.
Step-by-step explanation:
The plural form of the word 'la merced' in Spanish is 'las mercedes'. In Spanish, nouns ending in 'd' or 'z' change to 'ces' in the plural form. For example, 'la merced' becomes 'las mercedes', and 'el lápiz' (pencil) becomes 'los lápices'.
Learn more about plural forms in Spanish