Please choose the correct ending to complete the given sentence: Finance and Business: [header] How to succeed in online advertising [title] Learn how to research keywords for your campaigns effectively. [step] If you think you can just generate a batch of keywords for your online advertising campaign, and create something successful and financial lucrative for your business, you are very, very wrong. Keyword research, selection and optimization is an incredibly important part of any kind of online advertising campaign.

Ending1: It is a huge part of the development of /' marketing strategy. Training works, so your success will come in a lot of handy useful things : [substeps] Keyword marketing strategy has to do with your goals. Ending2: [substeps] Try to approach keyword testing as a poor approach. Keyword research shows that you are testing your market or the market for which your product or service relates. Ending3: [substeps] Search keyword analytic statistics for keywords you think people may need to match within a specific category or color. This will guide you carefully as to where to start. Ending4: Keywords are the route via which potential clients/customers find you and your website. If the keywords are wrong in any way, your online advertising campaign is going to suffer severely.

Answer format: ending1/ending2/ending3/ending4