Her father is ____________ industrialist who emigrated year ago to the USA. (appropriate article)

• a
• an
• the
• Zero article
Correct Option: B  [ an ]

Remark: "an" is used because "industrialist" begins with a vowel sound ( 'i' in "industrialist").

A book is like _________ mirror.

• the
• an
• a
• no article
Correct Option: C  [ a ]

Remark:

Our Principal is ________ man of principle.

• the
• a
• an
• No article required
Correct Option: B  [ a ]

Remark:

You should finish your work in _______ hour.

• the
• an
• a
• no article
Correct Option: B  [ an ]

Remark:

Should we look down upon _________ poor?

• the
• an
• a
• No article required
Correct Option: A  [ the ]

Remark:

He is not _________ honourable man.

• a
• an
• the
• none of these
Correct Option: B  [ an ]

Remark: The word "honorable" begins with a vowel sound because the "h" is silent.

We had __________ late lunch today.

• a
• an
• the
• none of these
Correct Option: A  [ a ]

Remark:

This is ______ boy whom I saw yesterday.

• the
• a
• an
• None of these
Correct Option: A  [ the ]

Remark:

We have bought _________ LCD television set.

• a
• an
• the
• zero article
Correct Option: B  [ an ]

Remark:

He wrote ________ one-act play.

• the
• an
• a
• no article
Correct Option: C  [ a ]

Remark: "a" is used with "one-act" ( Vowel word with a consonant sound.)
similar: a university, a one-man army, a union