Correct Answer: CADB

Solution : The second option is the correct choice.

The given sentences are about the train that drove 300 tonnes of gold into secret tunnels, and there is no evidence about it. There is a group of Polish who tried to build the replica, and they have built an armoured waggon so far.

• The first sentence talks about the train that drove 300 tongs of gold, that is, (C). Legend has it that in 1945, the Nazis filled a train with up to 300 tonnes of gold, jewels, and masterpieces and then drove it into secret tunnels in Germany.
• The second sentence talks about the evidence of this train, that is, (A). However, there is no evidence that this train or any such trains ever existed, and searches have been fruitless.
• The third sentence will talk about the group of Polish and the replica of the train, that is, (D): A group of Polish enthusiasts decided to build a full-size replica of this legendary train.
• Now we are left with the fourth sentence, which is (B): The group is building it in a former wood processing factory, and so far, the group has built an armoured waggon that is over 12 metres long.

Hence, the correct order is CADB.

Correct Answer: with United Kingdom against Germany

Solution : The correct option is with United Kingdom against Germany.

During the First World War, Japan fought alongside the United Kingdom and other Allies against Germany. Their involvement in the conflict was primarily aimed at seizing areas in East Asia and the Pacific that were under German control. This partnership with the Allies had a big impact on how Japan was perceived internationally. 

Correct Answer: during its business trip

Solution : The correct choice is the second option.

Explanation: "Its" should be replaced with the third-person plural possessive pronoun "their" to make the sentence grammatically accurate, as it is the correct choice, which shows that they also visited Italy and Australia apart from Germany on the business trip.

Therefore, the correct sentence is: "Apart from Germany, they also visited Italy and Austria during their business trip."

Correct Answer: She was heading and managing a nursing home for women.

Solution : The correct choice is the fourth option.

Before going to Crimea, Florence Nightingale managed a nursing home for women in London. This role involved overseeing the care and treatment of female patients, reflecting her commitment to nursing and healthcare.