Identify the adverb of the following sentence.
The dog sniffed the new visitor warily, unsure if they were friends or foes.

• The dog sniffed the new visitor warily, unsure if they were friends or foes.
- Here, in the sentence, 'warily' - is an adverb.
- 'Warily' is used as an adverb because it describes how the action (sniffed - নাক সিঁটকানো; অবজ্ঞা বা আপত্তি দেখানো) is performed.
- 'Warily' modifies the verb 'sniffed' by providing more information about the manner in which the dog sniffed. 

• Warily (adverb)
English Meaning: marked by keen caution, cunning, and watchfulness especially in detecting and escaping danger.
Bangla Meaning: সতর্কভাবে।

অপশন আলোচনা:
ক) sniffed - Verb,
খ) warily - Adverb,
গ) or - Conjunction,
ঘ) unsure - Adjective.