आवेगशीलता, कम ध्यान केंद्रित कर पाना, लगातार बेचैनी रहना और लंबे समय तक एक जगह बैठने में असमर्थता, मुख्य रूप से किस विकासात्मक विकार के लक्षण हैं?

The ability of hand-eye coordination, balance, and manual dexterity is significantly affected in which of the following learning disorders?

Murti, a grade 4 student, is able to read only at the level of a grade 1 student. He also has difficulty matching sounds, spelling words, and reading letters. Murti shows characteristics of: