My dad has a wide range of practical life skills. He can solve most problems by himself.

A. If my dad had a wide range of practical life skills, he could solve most problems by himself.

B. Because of having practical life skills, my dad cannot solve most problems by himself.

C. Were my dad to have practical life skills, he couldn't solve most problems by himself.

D. Without a wide range of practical life skills, my dad couldn't solve most problems by himself.