it would be yo conozco a todos los..
yo means I meaning the conjugation would have to be conozco.
for your information, a conjugation is the adaptation of a er/ir 'to be' verb, to suggest the people performing the verb.
for example..
trabajar- to work
trabajO- i work
trabajas- you work
trabaja- he/she works
I think it's C
because if you say B it sound wrong
Can I please look at the options... because in those options the answers are there
Question 3- Estoy ; question 4- es
Answer:
un suéter
Explanation: ties, ponchos, and suimsuits won't help Charlie keep warm if it is windy.