Pick out the correct sentence having Adverb of Manner :

The correct answer is Option (3) → Shikha cried bitterly

Adverb of manner:

• An adverb of manner tells how an action is done; it answers the question "How?".
• Most adverbs of manner are formed from adjectives with -ly (slow → slowly, bitter → bitterly).
• This sentence: How did Shikha cry? Bitterly, that is, with deep sorrow.
  Example: The old man walked slowly up the hill.

Why the Other Options are Incorrect?

Option 1: They went everywhere — Incorrect. Everywhere is an adverb of place; it answers "Where?".

Option 2: He will come again — Incorrect. Again is an adverb of frequency; it tells how often, not how.

Option 4: I therefore left my apartment — Incorrect. Therefore is an adverb of reason (a linking adverb); it gives the cause, not the manner.