Select the most appropriate option to fill in the blank.

Three hours should be ______ to finish the work.

sufficient

The most appropriate option to fill in the blank is sufficient.

The word sufficient means enough or adequate. In this case, the sentence is saying that three hours should be sufficient to finish the work. This means that three hours should be enough time to complete the work.

The other options do not make sense in the context of the sentence.

• Majestic means impressive or grand. It cannot be used in this sentence because it does not convey the same meaning of "enough or adequate".
• Voluminous means large or bulky. It cannot be used in this sentence because it does not convey the same meaning of "enough or adequate".
• Grand means impressive or magnificent. It cannot be used in this sentence because it does not convey the same meaning of "enough or adequate".