Currently I have added guest post option on my blog. My question is can I apply for adsense if I have guest post on my blog? Will google approve blog for AdSense which blog have guest post option? Or I need to remove guest post option before approve AdSense? Thanks
It depends on how many posts you have under your name. Make sure that You attach privacy policy and other required pages before applying for Adsense. You need to have at least 5 pages.
Yes you can apply in that case. The content source (self written or guest author written) doesn't matter, only thing which matters is quality of content and Traffic (~amount of content). That's all. You also need to add proper privacy policy and contact us pages before applying. it's always better to apply after 3 months of your blog/site's launch (in some countries it's 6 month)
What he means is that if the guest poster posts duplicate content google will penalize you and ban your adsense account for duplicate content, even though it wasn't written by you, but was published at your website. So do review guest posting as it should follow google's guidelines