The news could very easily spread false news/propaganda. News stations care more about getting views then anything. News can be seen to be negative.
Answer:
The sense of touch.
Explanation:
The word "gritty" refers to something being granular, grainy, which speaks most to the sense of touch. People can't (or shouldn't) eat/taste sand, they can see it but they can't necessarily tell it's gritty from its appearance (since sand is so fine), you can't smell something grainy or sand, and you can't smell sand either, especially not its texture.
To find out whether sand is gritty or not, one has to touch it - therefore, the sentence most appeals to the sense of touch.
There is no right answer to choose from.
