Correct option is D
The correct passive voice of the given sentence is
(d) His speech was surprising to everyone.
Rules for Active-Passive Voice Conversion:
·
Active Voice Structure: Subject + Verb + Object
·
Passive Voice Structure: Object + Helping Verb + Past Participle + Subject
·
Active Voice: "Everyone was surprised at his speech."
·
Subject: Everyone
·
Verb: was surprised
·
Object: his speech
·
Passive Voice: The object "his speech" becomes the subject.
· Since "surprised" is a past participle, it changes to an adjective in the passive form:
"was surprising to everyone."
Example:
·
Active: The news shocked everyone.
·
Passive: The news was shocking to everyone.
Explanation of other options:
·
(a) His speech surprise everyone. ❌ (Incorrect tense)
·
(b) His speech surprised everyone. ❌ (Still active voice)
·
(c) His speech is surprising everyone. ❌ (Incorrect tense)