Answer:
Fútbol, corazón and niño
Explanation:
First, let’s define the articles for all the words.
Fútbol(soccer):El/un
Corazón(heart):El/un
Educación(education): La/ una
Niño(boy): El/un
Masculine words use the articles of el, los, un, and unos.
Feminine words use the articles of la, las, una, and unas.
The words on the list that use el or un are fútbol, corazón and niño. Therefore, they are the masculine words.
