Answer:
The best option strategies for improving reading comprehension are the second and third. "Usa el contexto para adivinar el significado de las palabras nuevas en el texto" y "busca pistas visuales".
Step-by-step explanation:
The second option "Usa el contexto para adivinar el significado de las palabras nuevas en el texto" implies that you should focus on the context that surrounds the presentation of new words. Certain hints like prepositions, time tenses and adjectives, can give us a lot of information about the unknown word without needing to use the dictionary as reference.
The third option "busca pistas visuales" is also linked to the previous strategies. Certain texts may provide visual references of what is being described. If not, the panoramic and scenic description may give you details that might help you state a visual image.