I’m a bit confused on your question, I’m not sure which of the followings you are referring to
In the centre of a black hole is a gravitationalsingularity<span>, a one-dimensional point which contains a huge mass in an infinitely small space, where density and gravity become infinite and space-time curves infinitely, and where the laws of physics as we know them cease to operate.</span>
Answer:
El comportamiento asertivo implica la expresión directa de nuestros sentimientos, pensamientos y necesidades, respetando los derechos de los demás.
The correct answer is dice.
•Por qué dice él gracias?
You are going to use the word dice to fill the blank because is the correct conjugation in the sentence.
On English the sentences should be:
Why does he says thank you?