My mother is sick, ________she is going to the doctor. Filll up with the right conjunction.a.sinceb.soc.asd.for

In this sentence, the correct conjunction to fill in the blank is "so." The completed sentence reads: "My mother is sick, so she is going to the doctor."

Explanation

1. Conjunction Analysis:

   • Since: Typically indicates a reason or a time relationship; not appropriate in this context.
   • So: Indicates a consequence or result; appropriate since the mother's sickness is the reason she is visiting the doctor.
   • As: Generally used to indicate a reason or condition, but fits less naturally here.
   • For: Often used to indicate purpose, but does not fit the structure of this sentence effectively.

2. Contextual Understanding:

   • The sentence communicates a direct cause-and-effect relationship, where the mother's illness directly leads to her decision to see a doctor.

Therefore, "so" is the most suitable choice.