Question

congress can change which federal courts get to decide which cases. which arrow stands for this check?

Explanation:

The problem is about the separation of powers and checks and balances in the US government. Congress (Legislative) checking the Judicial branch (courts) by determining which cases federal courts hear. The arrow from Legislative to Judicial (or vice - versa? Wait, no: Congress (Legislative) acts on Judicial. Wait, the arrows: the one from Legislative to Judicial? Wait, the diagram has Judicial, Executive, Legislative. The check here is Legislative (Congress) on Judicial (courts). So the arrow from Legislative to Judicial? Wait, the two - way arrows between Judicial and Legislative: the arrow from Legislative to Judicial (the one going from Legislative to Judicial) represents Congress (Legislative) checking the Judicial branch by setting jurisdiction (which cases courts decide). Wait, actually, the check is Legislative (Congress) on Judicial, so the arrow from Legislative to Judicial (the right - pointing arrow from Judicial to Legislative? No, wait: the arrows between Judicial and Legislative are two - way. Wait, the problem is Congress (Legislative) can change which federal courts (Judicial) get to decide cases. So the arrow from Legislative to Judicial? Wait, in the diagram, the arrows between Judicial and Legislative: one is from Judicial to Legislative, one from Legislative to Judicial. The check here is Legislative (Congress) on Judicial, so the arrow from Legislative to Judicial (the left - pointing arrow? No, wait: the two - way arrows: if Judicial has an arrow to Legislative and Legislative has an arrow to Judicial. The action is Congress (Legislative) acting on Judicial, so the arrow from Legislative to Judicial (the arrow going from Legislative to Judicial, i.e., the left - pointing arrow from Legislative to Judicial? Wait, no, the labels: Judicial is on the left, Legislative on the right. So the arrow from Legislative (right) to Judicial (left) is the left - pointing arrow between them. Wait, but the problem is about Congress (Legislative) checking Judicial, so the arrow from Legislative to Judicial (the left - pointing arrow in the two - way between Judicial and Legislative) represents Congress's power over the courts' jurisdiction.

Answer:

The arrow from Legislative to Judicial (the left - pointing arrow in the two - way arrow between the Judicial and Legislative circles).