[Solved] The ____ produces a small spark when an electrical signal is sent from the electronic control unit. A) air bag igniter B) caster C) shock absorber D) restraint system Self-Esteem: A reflection of one's overall subjective emotional evaluation of their own worth. Music Training: The education and practice of skills related to performing, understanding, and creating music. Amateur Stargazing: The hobby of observing celestial bodies, such as stars, planets, and moons, usually with the naked eye or with telescopes, without professional equipment or expertise. Astronomy: The scientific study of celestial objects, space, and the universe as a whole.