Final answer:
The statement is false. Most Spanish nouns ending in -o are masculine, not feminine.
Step-by-step explanation:
The statement is false. In Spanish, most nouns that end in -o are actually masculine, and most nouns that end in -a are feminine. This is a general rule, but there are exceptions.
For example, el gato (the cat) and el perro (the dog) are masculine nouns ending in -o, and la mano (the hand) and la foto (the photo) are feminine nouns ending in -o.
Therefore, it is important to pay attention to the noun's gender rather than just its ending when determining whether it is feminine or masculine in Spanish.
Learn more about Gender of Spanish nouns