Answer:
True
Step-by-step explanation:
Tight ligaments in the thumb are known as a dominant trait, because it's purely genetic and the trait is inherited through generations. Recessive traits are small things like freckles, hair color and different amounts of the body hair, or even perhaps good eyesight. Knowing that information the presence of tight ligaments in the thumb is a recessive trait is indeed a "true statement" or the first option.
Hope this helps.