Respuesta :
Answer: Secretive Manner
Explanation: It makes the most sense considering secretive is a synonym to mysterious
Secretive manner phrases would change the author's diction without changing the tone.
What is mysterious behavior?
It refers to that which is not understood or easily understood.
What is another name for mysterious person?
Enigma is another name for mysterious person.
Hence, the correct answer is Option D
Learn more about mysterious behavior on https://brainly.com/question/26516045
#SPJ2