Select the most appropriate option for blank no. 5
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. optimum.
Let's have a look at the meaning of the given word-
- optimist- a person who is inclined to be hopeful and to expect good outcomes.
- outdated- not useful or common any more; old-fashioned.
- optimum- the best possible, giving the best possible results.
- optional- that you can choose or not choose.
As the statement is talking about the temperature at the machine should be kept we need to choose "optimum" that has the meaning of "best possible result".
Hence, the chosen option will be correct.