Answer:
5. enciende
6. pienso
Explanation:
Regardless of the fact that these verbs are considered irregulars, to choose the correct conjugated form take a look at the pronoun being used.
Since each pronoun as is own dedicated ending (which is why in Spanish you can omit the pronouns in sentences), focus on it to select the proper conjugation.
El Senor Leon = el (he) ~-a / -e => enciende
Yo (I) ~ -o => pienso
I think it is answer a but I’m not 100 percent
Q1: muy lejos de la persona
Q2: esos
Q3: Mi
Hope this helps and have a great day!
calculates the concentration of hydronium in acid rain if the pH is 4.35