What type of commands does a robot execute by remote control?

The correct answer is manual.

When a robot is controlled remotely, the commands it executes are direct inputs from an operator, usually through a control interface. This means that the operator is actively guiding the robot's movements or actions in real-time, responding to the conditions and environment. The term "manual" reflects this hands-on approach, where the controller must input commands based on their observations and needs.

In contrast to manual control, preprogrammed commands involve a sequence of actions that are stored and executed without the need for ongoing input from an operator. These commands operate independently once initiated. Autonomous operations refer to a robot's ability to perform tasks based on its programming and sensor input without any human intervention. The execution of commands, in a general sense, does not specifically denote a type of operation but rather the action that follows, which can encompass manual, preprogrammed, or autonomous methods. Thus, manual clearly identifies the nature of command execution in remote operation.