There are more and more retailers and business adopt the bitcoin and the users of the bitcoin will also rise.
When the bitcoin have more users, the price will rise a lot. The price is proportional to the mass adoption.
Not at all. It is proportional to the amount currently traded (read supply and demand meeting at a few major exchanges). Obviously, this has next-to-nothing to do with mass adoption. A few exceptionally large whales (blue whales) could make the price whatever they like constrained only by profit margins they could potentially attain thereby...
That would most certainly be the case if Bitcoin had been actively used in real life and only a small percent of it had been traded
The more bitcoin transacted and used by the retailers and merchants, the higher the bitcoin price will be.
the second one needs to happen first if we want to move forward with the adoption. it means people should first start buying bitcoin and show their interest in using it as a currency then the merchants will adopt it because there are customers requesting it, they will never add something that has so little people wanting to use it.