The correct answer is 'took'.
Explanation:
The sentence describes a past event. The past simple tense is used to describe completed actions in the past. Therefore, the correct form of the verb 'take' is 'took'.
Translation:
Мы совершили лодочную прогулку по Темзе в Лондоне, Великобритания.
Thus, the complete sentence is: We took a boat trip along the Thames in London, the UK.