Research is a way of investigating a phenomenon. This makes use of the scientific method which follows to observe, make hypothesis, test and gain results. Then after, infer from these results conclusions. Thank you for your question. Please don't hesitate to ask in Brainly your queries.
The answer is #1 I believe !
Answer:
there should be a "No, thanks" sign at the bottom of the ad, if there isnt, you've simply run out of answers and have to wait for a full day for the answers to be refreshed.
