Final answer:
The essential skills developed in the Toughening phase activities include technical and physical proficiencies, critical thinking, and analytical abilities. For actors, this phase involves developing the ability to memorize and interpret dialogue, as well as physical awareness and expressive freedom.
Step-by-step explanation:
The essential skills of the Toughening phase activities in the Girls' Holistic Development Program include technical and physical proficiencies, honing job-specific skills, critical thinking and analytical abilities, and refining transferrable skills. For actors, the toughening phase involves developing the ability to memorize and interpret dialogue, as well as physical awareness and stamina, expressive freedom and flexibility, and relaxation. These skills require time, discipline, analytical skills, and dedication. Furthermore, the toughening phase also focuses on developing transferrable skills such as critical thinking and analytical abilities.