Javier is listening to the sports updates on the radio. his girlfriend is talking to him at the same time. unfortunately, he did not perceive a single word his girlfriend said. this is an example of:

This is an example of selective attention.

Explanation:

Selective attention refers to the ability to focus on a certain stimulus while blocking out the other ones. Just as the name states, the attention selects what to focus on and everything else becomes secondary and is not processed.

In this case, Javier selectively focusing his attention on the sports updates on the radio so even if his girlfriend talks to him, he won't process that information and will not know what she said because of this.

b) the planets year length would be longer

hope this !