Select the most more appropriate option to fill in the blank.

Timmy _______ avoids playing tennis on weekdays as it is very tiring.

usually

The most appropriate option to fill in the blank is usually.

The sentence "Timmy usually avoids playing tennis on weekdays as it is very tiring" means that Timmy typically avoids playing tennis on weekdays because he finds it tiring. The word "usually" is the most appropriate word to use in the blank because it accurately reflects the fact that Timmy does not always avoid playing tennis on weekdays, but he does most of the time.

The other options are not as appropriate.

• The word "rarely" means not often. This does not make sense in the context of the sentence, as Timmy does not rarely avoid playing tennis on weekdays, he does it most of the time.
• The word "greatly" means to a great extent. This does not make sense in the context of the sentence, as Timmy does not avoid playing tennis on weekdays to a great extent, he simply finds it tiring.
• The word "highly" means to a very high degree. This does not make sense in the context of the sentence, as Timmy does not avoid playing tennis on weekdays to a very high degree, he simply finds it tiring.