Choose the option which means the opposite of the given word:
Erratic

A) Free
B) Punctual
C) Consistent
D) Respectful

Hint: The word comes from the Latin verb errare, or "to wander" off course. In general, if someone is driving a car that veers out of its lane it is said to be driving erratically.

Complete step by step answer:
Analyze all the option to be able to choose the correct word,

Free: according to the context of the question free refers to something which is not under any control and has the ability to act as one’s own free will.

Punctual means to be acting at the right time or perform the duty at the exact time as appointed.

Consistent is related to the word consist, which refers to what something is made of equal distribution or is regular or periodic in action.

Respectful is the adjective form of the common word respect, which means a feeling of admiration, such as respectful behavior.

So, the correct answer is “Option C”. consistent

Note:
The word erratic can be best described as unpredictable. An erratic person is one who behaves in a wildly unpredictable manner, happy and kind one minute and angry and shouting the next.