¿cuales son estrategias de escuchar y comprender?
repite la palabra que no entiendes
cubre tus oídos con tus manos
nota el tono de voz y 'el lenguaje corporal de la persona
imita las acciones de los demás
identifica palabras similares en inglés
escucha una estación de habla española

The question says:

Which ones are the strategys of listening and understanding?

Lets analyze each option:

1) repite la palabra que no entiendes (repeat the word that you do not understand)

This can be usefull, specially if there is someone that can explain you what means the word that you don't understand.

2) cubre tus oídos con tus manos ( cover your ears with your hands )

This wont help you at all.

3) nota el tono de voz y 'el lenguaje corporal de la persona (note the tone of voice and 'the person's body language)

There is a lot of information in the tone of voice and body language, is always a good habit to notice these things.

4) imita las acciones de los demás (mimic the actions of others)

This does not help.

5) identifica palabras similares en inglés (identifies similar words in English)

This kinda helps, but not really. You also must remember that there are some words that may sound alike, but mean different things.

6) escucha una estación de habla española (listen to a spanish speaking station)

This can help a lot, specially for pasive learning.

See the attached table for answer.

Explanation: