What effect do practices like gatekeeping, agenda setting, and framing have on social problems?

"note: it doesn't have answer choices, im writing for an essay"

Gatekeeping It is a journalistic concept for editing. Gatekeeper is the one that defines what will be reported according to news value, editorial line and other criteria.

Agenda setting is a type of social media effect that comprises the selection, disposition and incidence of news about topics that the public will speak and discuss.

Framing refers to the fact that choice is influenced by how the problem is expressed.

All of that can influence opinions, in a bad or in a good way. They all have that kid of power to influence social problems, but if it is in a good or in a bad way is a thing that we can predict.

There would be a decrease in contractility

Explanation:

Since the calcium ion channel blockers slow down the calcium ion and they do not affect the potassium ion efflux which thus leads to a quick repolarization of the cell. This causes the muscle cell to lose the ability to sustain the excitability needed to keep it in a contracted state.