Answer:
The correct answer would be, Helena is between the age 2 to 3 years.
Step-by-step explanation:
Preschool children, who are usually between the age 2 to 3 years, tend to have strong preferences for gender type toys and same gender playmates. Girls usually prefer dolls, arts, and fashion, whereas boys prefer guns and transportation toys. Boys are also seen more aggressive than girls.
So in this question, if Helena prefers pink toys and clothes over other colors, and plays with dolls instead of trucks, and tells her mother that only boys can play with trucks, she must be in the age between 2 to 3, as she has a strong preference of gender type toys.