Oasis is to sand as island is to

Which one of the following options maintains a similar logical relation in the above sentence?

For the question below, determine the relationship between the pair in the question and then select, from the options the pair having a similar relationship to the first pair.

Mendicant : Impecunious::

“A _____ investigation can sometimes yield new facts, but typically organized ones are more successful.”

The word that best fills the blank in the above sentence is

Fill in the blank with the most appropriate word out of the four alternatives suggested below the question.

Ensure your life is a           of knowledge and wisdom.

Select the INCORRECTLY spelt word.