Question

but though noises and disturbance continued each morning for several days afterwards they were never again as loud and insistent as on that sunday.
source: stranger than fiction being tales from the byways of ghosts and folk - lore
in this sentence, insistent means:
causing or able to cause feelings of horror
having a brooding or threatening quality
readily reacting to suggestions and influences
repetitive and persistent

Explanation:

In the context, the noises were persistent and kept occurring. "Insistent" here implies repetitive and not giving - up, which aligns with "repetitive and persistent". The other options do not fit the context of describing noises.

Answer:

repetitive and persistent