**Core Concept**
Lesions in certain areas of the brain can lead to distinct cognitive and behavioral impairments. The described symptoms, including impairment of moral and social sense, lack of initiation, difficulty in planning, and flight of ideas, are characteristic of a specific neurocognitive disorder.

**Why the Correct Answer is Right**
The symptoms described are classic features of frontal lobe dysfunction, particularly involving the prefrontal cortex. The prefrontal cortex is responsible for executive functions, including decision-making, planning, and social behavior. Damage to this region can result in impaired moral and social sense, as well as difficulties with initiation and planning. The flight of ideas, a characteristic feature of mania or hypomania, can also be seen in frontal lobe lesions, particularly those involving the dorsolateral prefrontal cortex.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as it does not directly relate to the described symptoms.
**Option B:** This option is incorrect as it refers to a different set of cognitive and behavioral impairments, typically associated with posterior cortical atrophy.
**Option C:** This option is incorrect as it refers to a different type of cognitive disorder, characterized by memory impairments and difficulty with learning new information.

**Clinical Pearl / High-Yield Fact**
Frontal lobe lesions can result in a range of cognitive and behavioral impairments, including executive dysfunction, social behavior disturbances, and changes in personality. It is essential to consider the location and extent of the lesion when evaluating patients with frontal lobe symptoms.

**Correct Answer: A. Frontal lobe**