The sentence refers to a past continuous action that was happening when another action ("heard") occurred.
The correct structure for past continuous is:
was/were + present participle (verb + -ing).
The correct form is:
"was lying" (past continuous).
The correct sentence should be:
"He was lying on the bed when he heard a noise."
Thus, the correct answer is Option A ("was lying").
Each question has a sentence that has an underlined part. Choose the option which rephrases the underlined part in the most appropriate manner in terms of grammar and usage.
In an attempt to boost their profits, many edible oil-producing companies have been engaging themselves in propaganda against commonly used oils and promoting exotic and expensive varieties of oils \(\underline{as\ more\ healthier\ options.} \)