Final answer:
The frontal lobe is responsible for higher mental functions such as thinking and problem-solving, which include executive functions, working memory, and attention.
Step-by-step explanation:
The higher mental functions, such as thinking and problem-solving, are found in the frontal lobe of the brain. The frontal lobe is located in the forward part of the brain and is involved in a variety of functions including reasoning, motor control, emotion, and language. It houses the prefrontal cortex, which is crucial for higher-level cognitive functioning, planning, and coordinating movement, and it also contains Broca's area that is responsible for language production. Furthermore, this lobe is significant for executive functions, important for goal-directed behaviors, and it includes working memory, which helps organize and represent information. Additionally, aspects of attention like inhibiting distracting thoughts and actions to focus on a goal are controlled here.