Identify the poetic device used in this section of text: . \"a noiseless, patient spider,. i mark'd, where, on a little promontory, it stood, isolated; . mark'd ". a. assonance. b. repetition. c. simile. d. iambic pentameter

"Repetition" is the poetic devise among the choices given in the question that is used in this section of the text. The correct option among all the options that are given in the question is the second option or option "B". I hope that this is the answer that has actually come to your help.

The answer is B, repetition. 
Assonance is the sound of a vowel or diphthong in nonrhyming stressed syllables near enough to each other for the echo to be audible. Repetition is where you repeat what has already been said. A simile is when you compare something to another thing of a different kind. Iambic pentameter is a line of verse with five metrical feet, each consisting of one short syllable and followed by one long syllable. 

The last one is right