Step 1: Understanding the Concept:
Family planning involves the use of contraceptive methods to control the number of children a couple has and the intervals between their births. The question asks to identify which of the given options are effective contraceptive measures.
Step 2: Detailed Explanation:
The options represent different types of contraceptive methods:
\[\begin{array}{rl} \bullet & \text{Diaphragm: This is a barrier method of contraception. It is a dome-shaped cup that is inserted into the vagina before sex to cover the cervix and block sperm from entering the uterus. } \\ \bullet & \text{Condom: This is also a barrier method. It is a thin sheath, typically made of latex, worn over the penis during sex to prevent semen from entering the vagina. It also protects against sexually transmitted infections (STIs). } \\ \bullet & \text{Copper T and loop: These are types of Intrauterine Devices (IUDs). They are small T-shaped or loop-shaped devices inserted into the uterus by a healthcare professional. They work by preventing fertilization or implantation. } \\ \end{array}\]
Since all three options are recognized and effective methods of contraception used in family planning, the correct choice is "All of these".
Step 3: Final Answer:
Diaphragm, Condom, and Copper T/loop are all effective measures used in family planning.