Select the most appropriate option to fill in the blank and make a grammatically correct sentence.

Nowadays, many home buyers __________ interest in digital homes.

are showing

The correct answer is are showing.

The sentence is in the present tense, and it is describing a current trend. The verb "show" is in the present continuous tense, which is used to describe actions that are happening now or that are happening repeatedly. So, the sentence "Nowadays, many home buyers are showing interest in digital homes" means that many home buyers are currently showing interest in digital homes.

The other options are not grammatically correct.

• Shows is in the present simple tense, which is used to describe actions that happen regularly or habitually. However, the sentence is not describing a regular or habitual action, it is describing a current trend.
• Showed is in the past tense, which is used to describe actions that happened in the past. However, the sentence is not describing an action that happened in the past, it is describing an action that is happening now.
• Had shown is in the past perfect tense, which is used to describe actions that happened before another action in the past. However, the sentence does not have another action in the past that it is describing.