Question

uncanny means :
deserving or inciting pity
not to be placated or appeased or moved by entreaty
not secure
suggesting the operation of supernatural influences

Explanation:

The word "uncanny" is related to the supernatural. The first option "deserving or inciting pity" is more related to words like "piteous". The second option "not to be placated or appeased or moved by entreaty" is more about being implacable. The third option "not secure" is about insecurity. The fourth option "suggesting the operation of supernatural influences" is the correct meaning as "uncanny" often refers to something mysterious or related to the supernatural.

Answer:

suggesting the operation of supernatural influences