Final answer:
Transition metals are good conductors of both thermal and electrical energy due to their free electrons, making option A the correct answer. They are also less reactive than alkali metals and do not make aluminum but are instead different elements used in various applications.
Step-by-step explanation:
Transition metals are good conductors of thermal energy and electrical current. This property is because they have many free electrons that can transport thermal energy and electrical charge efficiently. Among the available options, choice A is correct since it states that transition metals are good conductors of thermal energy. Transition metals are indeed used in a variety of applications including cooking utensils, which require good thermal conductivity. They are also used in electrical conducting wires due to their excellent electrical conductivity.
Comparatively, transition metals are not more reactive than alkali metals, which is option B and is incorrect. Alkali metals are among the most reactive elements in the periodic table. Transition metals do not make aluminum; instead, they are distinct elements such as iron, copper, nickel, and many more, which are used in various alloys for their desirable properties.