Which sentence contains a conjunction?

they had not seen the experiment, yet they knew the results.

save a seat for the biology professor.

he did not know the laboratory would be so large.

she questioned both scientists.

The sentence that contains a conjunction is “They had not seen the experiment, yet they knew the results.” (OPTION A)

Conjuction used in the sentence is "YET".

Explanation:

“Yet” serves the function of a conjunction here. The purpose of a word which joins clauses and sentences or connects two or more words in a particular clause is said to be a conjunction.

“Yet” when used in joining clauses or sentences is used to mean however or nevertheless. Also, the word “yet” joins two independent sentences which have proper meanings but offers a sense of negation to the newly formed sentence .

hey, my username is theoneandonly003#9598, add me.

i think its a.

an ugly duckling is teased by the other ducklings. when she grows up, however, the ducklings discover that she is a beautiful swan