The Federal Reserve would have to increase the discount rate and decrease the reserve requirement to be able to increase the money supply. As actions by the Fed can affect the economy, any monetary policy changes may make it difficult for a business to retain employees.
D) Verb: has been raining Mood: indicative
The entire verb phrase is "has been raining". "Has" and "been" are both helping verbs that create the present progressive tense. This tense is used to show something that is happening and has been happening for a period of time. The indicative mood is correct because the indicative mood indicates something that fact. Interrogative mood is question form. Conditional form is based on something else happening.
It depends on your learning type (kinetic, visual, auditory, etc.) however most evidence proves that A.) quizzing yourself would be the best answer