A clause from Sentence (i) has been turned into a(n)________in sentence(ii).

(i) Since she knew what the lecture was about, she didn't attend the meeting.
(ii) Knowing what the lecture was about, she didn't attend the meeting.

A. compound predicate
B. relative pronoun
C. infinitive
D. phrase

Words are combined into two types of "building blocks" in order to create sentences: (1) phrases and (2) clauses. Clauses have subjects and verbs; phrases might have a noun and modifiers or a verb and modifiers or some combination, but not a subject with its verb.

There is a dependent clause at the beginning of (i) -- "Since she knew what the lecture was about" -- SHE is the subject and KNEW is the verb.
This clause has been turned into a phrase -- KNOWING is the verb form from KNEW, but it has no subject. This is now a participial phrase because KNOWING is the participle modifying the subject of the main clause, SHE.

If you go to www.ccc.commnet.edu/grammar, you will find lots of help with grammatical things. Nearly all the grammar and usage help is found in the Word & Sentence Level menu.

=)

A. Compound predicate

I want to know the answer to this question.

It is a phrase

phrase

The clause from Sentence (i) has been turned into a phrase in Sentence (ii).

Actually, the correct answer is D. phrase.

In sentence (ii), "Knowing what the lecture was about" is a phrase that functions as an introductory modifier. It modifies the subject "she" and provides additional information about her state of knowledge regarding the lecture.

A phrase is a group of related words that does not have a subject and a verb. In this case, "Knowing" is the present participle form of the verb "know" and acts as the head of the participial phrase.

If you want to learn more about phrases and their functions, you can refer to grammar resources or websites that provide explanations and examples.