Question

gary used to have curly hair like his grandson larry and his daughter mary. but since his 20s, hes been bald. is this trait due to nature or to both nature and nurture? nature nature and nurture

Explanation:

Baldness (especially male - pattern baldness) has a strong genetic (nature) component, as Gary's family has curly hair (indicating genetic traits), and his balding started in his 20s which is typical for genetic - based baldness. There's no clear indication of environmental (nurture) factors causing it here, so the trait is due to nature.

Answer:

nature (the "nature" button option)