Verbal Ability - Closet Test

Directions to solve :
In each of the following passages there are blanks each of which has been numbered. These numbers are printed below the passage and against each four word/group of words are suggested, one of which fits the blank appropriately. Find out the appropriate word/group of words.
The knowledge of bacteria has come in the last century although two thousand years ago some one said, "It is to be (1)__________that if there be any marshy places, certain animals (2)__________there which are (3)__________to the naked eye, and yet getting into the system through the mouth and nostrils (4)__________serious disorders." But nobody then could prove this to be a true, for these 'animals' could not be seen, and there were no (5)__________in those days.
1.
Answer

Answer :

Option B
2.
Answer

Answer :

Option C
3.
Answer

Answer :

Option A
4.
Answer

Answer :

Option C
5.
Answer

Answer :

Option B