What word part denotes 'relating to' in 'connectivity'?

The correct choice is associated with the suffix that indicates a characteristic or relation to the root word. In the case of "connectivity," the suffix "ive" transforms the verb "connect" into an adjective, suggesting a quality or state related to connection. This suffix signifies that the word describes something that possesses the quality of being connected.

The other parts of the word contribute different meanings; for instance, "con" refers to together or with, and "nect" comes from the Latin root meaning 'to bind' or 'to tie.' The suffix "ity" denotes a state or condition, which in this case would refer to the state of being connected. Thus, the "ive" suffix is specifically focused on indicating that something pertains to or is characterized by the root word, which in this scenario relates to connection.