B-Robotic surgery allows surgeons to make smaller incisions.
Explaination: Anything having to do with medical procedures are healthcare so this is my reasoning.
When more than 1 person gives an answer to your question, you receive the option to tick the one you think is more well-explained or thought out in order to make that the Brainliest Answer :)
For 1.
Positive correlation means if you plot a country's population and land size on a graph. There would be a linear regression line that's sloping upwards.
Since it's a scatterplot, there will be some that fall out of the line, but most of them should be on the line.
It's (A)
For 2.
An outlier is a datapoint that's far, FAR away from the others, so it's (B)
For 3. (A), it's a single line-of-best fit that runs through the middle of the cluster of data points.