Select the most appropriate antonym of the highlighted word in the given sentence.
His grandfather was quite grumpy.

Correct option is B

Word Meaning:
Grumpy means easily annoyed or irritable.
Synonyms: irritable, cranky, moody.
Antonyms: amiable, cheerful, pleasant.
Explanation:
"Amiable" means friendly and good-natured, which is the exact opposite of "grumpy".
Option Meanings:
· Tenable – able to be defended or maintained (ठोस/टिकाऊ); unrelated.
· Amiable – friendly and pleasant in manner (मिलनसार). Correct.
· Possible – capable of happening (संभव); not relevant.
· Edible – fit to be eaten (खाने योग्य); unrelated.