Final answer:
Integration Testing is primarily considered as Blackbox Testing because the tester does not need to know the internal structure, design, or implementation of the software while conducting the test.
Step-by-step explanation:
The opacity of Integration Testing can be interpreted as its transparency or visibility into the software's internal workings. Integration Testing is mainly considered as a type of Blackbox Testing. The test is conducted on the basis of the software requirements and functionality, without any knowledge of the internal code structure.
Integration Testing does not normally involve looking into the code and understanding the white box perspectives, which refers to testing internal structures or workings of an application, as opposed to the functionality exposed to the end-user.