Choose the word which means the opposite of the given word:
Furtive
A) Open
B) Obvious
C) Unambiguous
D) Straight

Hint:Antonyms are the words that are opposite in meaning to another. The root words for the word 'antonym' are the words 'anti' meaning 'against' or 'opposite' and 'onym' meaning 'name’. For instance: the antonym of ‘hot’ is ‘cold’.

Complete answer:
Let’s examine the meaning of the given options -
Option A) Open - is the correct answer because the meaning of open is ‘allowing access, passage, or a view through an empty space; not closed or blocked or unlocked or unbolted’ and this is the antonym of the word furtive as they have different meaning or they are opposite in meaning to each other. Thus, this is the correct answer.
Option B) Obvious - is an incorrect answer because the meaning of obvious is ‘easily perceived or understood; clear, self-evident, or apparent or crystal clear or plain or clear’ and this is not antonym of the word furtive. Thus, this is an incorrect answer.
Option C) Unambiguous - is an incorrect answer because the meaning of unambiguous is ‘not open to more than one interpretation’ and this is not antonym of the word furtive. Thus, this is an incorrect answer.
Option D) Straight - is an incorrect answer because the meaning of straight is ‘extending or moving uniformly in one direction only; without a curve or bend or linear’ and this is not antonym of the word furtive. Thus, this is an incorrect answer.

Hence, the correct answer is option ‘A’.

Note: Antonyms are the words that are opposite to each other i.e. antonyms of furtive is open, and synonyms are the words that are similar in meaning. So, the synonym of furtive is secretive or secret. Thus, Option A is the most appropriate answer as compared to the other options as they do not have the opposite meaning to the given word.