Final answer:
The pronoun that corresponds to the word 'ejercicio' in the given sentence is 'lo'.
Step-by-step explanation:
The pronoun that corresponds to the word 'ejercicio' is 'lo'. In Spanish, the pronoun 'lo' is used to refer to the direct object when it is masculine singular, which is the case for 'ejercicio'. An example sentence could be 'Hago ejercicio todos los días y lo disfruto' (I exercise every day and I enjoy it).
Learn more about Spanish pronouns