16 Jack ..... around the world since January.

Analysis:

The sentence describes an action ('travelling around the world') that started in January and is ongoing or has relevance to the present. The present perfect continuous tense ('has been travelling') is used for actions that started in the past and continue to the present, often emphasizing the duration.

Breakdown:

• A has been travelling: Correct. Present perfect continuous, indicating an action that started in the past and continues.
• B travelled: Incorrect. Past simple, refers to a completed action in the past.
• C travels: Incorrect. Present simple, used for habits or general truths.

Translated Question:

16 Джек ..... по всему миру с января.