Which of the following is not a source for external data?

A.) Commercial databases, B.) Corporate databases, C.) Sensors, or D.) Satellites.I tried and I have even reread my chapter and I cannot find the answer. I want to say C.) sensors but that just does not seem right.

To determine which option is not a source for external data, let's analyze each of the options:

A) Commercial databases: These are databases created and maintained by external companies or organizations. They can contain a wide range of information, such as customer demographics, market trends, or industry-specific data. This is a common source of external data.

B) Corporate databases: These are databases owned and managed by a specific company or organization. They typically store internal data about the company's operations, such as sales records, inventory levels, or customer profiles. While this is a type of data source, it is not considered an "external" data source since it pertains to the specific organization and not external entities.

C) Sensors: Sensors are devices that capture physical or environmental data. They can be used to monitor various parameters such as temperature, pressure, humidity, or motion. Sensors are a common source of external data, as they provide real-time information about the surrounding environment.

D) Satellites: Satellites collect data by capturing images, recording weather patterns, monitoring land movements, and much more. Satellites are extensively used as a source of external data, supplying valuable information in fields like weather forecasting, agriculture, and urban planning.

Based on this analysis, option C (Sensors) seems to be the correct answer since it is a valid source of external data. Therefore, the option that is not a source for external data in this scenario would be option B (Corporate databases).