Read the sentence.

Ella's supervisor was usually receptive to new ideas.

What does receptive mean?

able to take again; willing

able to replace; undo

to look at later; review

unable to take again; close-minded

When we say receptive, this is an adjective that refers to someone who is willing to accept new ideas or concepts. In other words, it means open-minded. Therefore, as it is used in the sentence above, the word receptive means "able to take again; willing". The answer would be the first option.