Victor::O que o pessoal já falou: completar ação nao significa obrigação de completar o bonus. Mas concordo que podiam especificar, como fizeram nas regras em alemao. De acordo com um usuário no BGG, as regras em alemao descrevem que voce avança ATÉ 5 espaços na trilha da industrialização, entre outros exemplos:

For the chits, here the ones that you might be able to do only partially:

4 track advancements. In the German, this is "up to 4".[/color

3 doublers. Again, I would say that you can take as many as there are and that you can use, even if this number is less than 3.

5 industry advancements. As Peter said, the German rules say "up to 5".

Choose a ? card and an end-bonus card. I would say that, in the unlikely event that one of the two decks has run out of cards, you can still choose one from the other deck (and that you can choose 10 points if the end-bonus deck is empty).

In the case of the doublers and cards, I would say that your original action is considered completed entirely, even if you have to take fewer doublers or fewer cards.

E na mensagem seguinte a aquele post, citam que "foi oficialmente esclarecido que pode obter o bonus de forma parcial", mas nao cita onde foi feita essa declaração oficial.

Fonte:

https://boardgamegeek.com/article/14605045#14605045

https://boardgamegeek.com/article/14605375#14605375