Correct option is A
Option (a) contains an error.
Explanation:
· The verb
"write" is incorrect because the sentence is in the past tense.
· "When I saw" indicates that the action happened in the past, so the verb must also be in the
past continuous form.
· Correct phrase:
"her, she was writing"
Grammatical Rule Used:
· When describing an action in progress at a specific time in the past, use the
past continuous tense (was/were + V-ing).
·
Example: "When I saw her, she
was reading a book."
Corrected Sentence:
· "When I saw her, she
was writing a poem with full attention."