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==>I want to ask if we Can deploy MDT in only 1 drive C and the rest of my drives D, and E remains intact without any deletion.
Yes, we can format only C drive during the OS deployment. Firstly, we need to remove the "Format and Partition" steps in your task sequence. Then set the destination to a specific Disk 0 and Partition 1 (for example) in "Apply Operating System Image" step or add a "Run command line" step to wipe C drive. (Note: Please back up your data.) For more information, please refer to:
During OS deployment, format the C drive only
Formatting only C drive using format and partition disk task sequence
Preventing overwriting of extra partitions in an MDT task sequence
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